Changelog:

Overview of Changes from GIMP 2.6.3 to GIMP 2.6.4
=================================================

* Bugs fixed:

565223 – Perspective transformation jagged edges / comb effect
563985 – jpg save dialog: "cancel" is treated like "commit"
for settings
564087 – Using clone tool on a layer with a part out of canvas
causes crashes
564593 – crash when the drawable is changed while a color tool
is active
564869 – GIMP crashes on selecting Tools->GEGL operation
565138 – python-fu-foggify does not check if image is in rgb mode
563130 – Hue selection mode does not cross the 0-360 degrees line
563179 – Scrollbars not resized when we extend the canvas size
562459 – PF_PALETTE: 'TypeError' when used in a plugin that is
registered in <Image>
562427 – Compilation with --as-needed
562386 – PF_SLIDER and PF_SPINNER 'Step' values do not change
consistently...
562366 – Default image dimensions are not correctly
transferred in the file/new dialog box
561899 – GIMP can't save to mounted filesystem if file exists

* Updated translations:

Greek (el)
Hindi (hi)
Hungarian (hu)
Italian (it)
Japanese (ja)
Korean (ko)
Slovenian (sl)
Swedish (sv)
Tamil (ta)
Simplified Chinese (zh_CN)

Changelog:

Overview of Changes from GIMP 2.6.4 to GIMP 2.6.5
=================================================

* Bugs fixed:

571628 – Scaling image to 25% turn background from white to grey
567840 – GIMP's GtkScaleButton conflicts with GTK's
569043 – GEGL tool - missing Operation Settings for all sub-tools
568890 – don't rely on GtkAction implementation details
568909 – wrong RGB values for color names in libgimpcolor/gimprgb-parse.c
568839 – wrong hex RGB value for the color names slategrey and slategray
559408 - Brushes dragged to the image window look strange
563337 – Rectangle Select Tool does not allow 1:1 fixed ratio
568016 – Black pullout parameter of plug-in-newsprint has no effect
562818 – First image opened in GIMP offset
562213 – Align Tool doesn't work properly if it is the active tool
at startup

* Updated translations:

Spanish (es)
Estonian (et)
Hindi (hi)
Italian (it)
Brazilian Portuguese (pt_BR)
Romanian (ro)
Russian (ru)
Serbian (sr)
Tamil (ta)
Simplified Chinese (zh_CN)

Changelog:

Overview of Changes from GIMP 2.6.5 to GIMP 2.6.6
=================================================

* Bugs fixed:

571117 – lcms plug-in crashes on broken profile
575154 – changing the help browser preference may not work
573542 – blur plugin: bug in the first line
572403 – gimp-2.6 crashed with SIGSEGV in IA__g_object_get()
573695 – 1-bit white background saved as PBM becomes all black
573488 – Small bug in Filter>Distorts>Ripple
572156 – top left pixel position/coordinate is not 0,0 but 1,1
472644 – Rotate with clipping crops the whole layer

* Updated translations:

German (de)
Spanish (es)
Estonian (et)
Basque (eu)
French (fr)
Italian (it)
Portuguese (pt)
Simplified Chinese (zh_CN

Changelog:

Overview of Changes from GIMP 2.6.6 to GIMP 2.6.7
=================================================

* Bugs fixed:

591017 – Tablet pan is not working as fast as it should
577581 – Crashes when using any colors tool/function on Windows
589667 – GIMP crashes when clicking GEGL Operation on Windows
569833 – file-jpeg-save erroneous with small quality values
590638 – Changing palettes from list to grid view loses "locked to dock" status
589674 – "Send by Email" does not update "Filename"
589674 – "Send by Email" does not update "Filename"
586851 – Transparent BMP files fail to load
589205 – help-browser uses deprecated (and sometimes broken) webkit call
582821 – 'Sphere Designer' does not reset correctly...
570353 – first time open of .svg file ignores the requested units
555777 – Export to MNG animation fails
577301 – Dithering with transparency is broken for "positioned" method
493778 – metadata plug-in crashes on some images
567466 – PNG comment not found if more than 1 tEXt chunks
585665 – Exporting to PSD with a blank text layer creates a corrupt file
586316 – Levels tool does not adjust output levels correctly if input levels are changed
569661 – Import from PDF throws errors when entering resolution in pixels per millimetre
567262 – Black pixels appear in "Spread" filter preview
554658 – Path Dialog: Path preview pics not to see constantly
167604 – gimp_gradient_get_color_at() may return out-of-bounds values
567393 – Rectangle select tool size shrinks to 0 if size is larger than the image and the up or down arrow is pressed
587543 – crash when invoking certain actions by keyboard shortcut
563029 - Closing maximized image doesn't restore document window size
585488 – Perspective transformation on a layer with a mask causes crash
586008 - GIMP crashes when right-click canceling a drawing action initiated outside layer boundaries
584345 – when printing, the number of copies should be reset to 1
557061 – Alpha to Logo
472644 – Rotate with clipping crops the whole layer
577575 – transform tool fills underlying extracted area wrongly
555738 – Image display is wrong after undoing canvas size
577024 – help-browser plugin crashes when used with webkit 1.1.3
555025 – Action GEGL box widgets weirdness

Changelog:

Overview of Changes from GIMP 2.6.7 to GIMP 2.6.8
=================================================

* Bugs fixed:

470698 - MapObject cannot modify highlight
593848 - FG color changed to black when FG-BG Editor tab created
594651 - layer.scale() raises RuntimeError
594998 - Keyboard shortcuts does not work for first image when dock
is focused
599765 - F1 key on gimp-tool-align in menu have wrong link and it
open gimp-tool-move
600484 - Gimp BMP Integer Overflow Vulnerability
600741 - "read_channel_data()" Integer Overflow Vulnerability
601891 - gimp_image_get_selection returns None
602761 - plug-in-grid: Parameters Horizontal/Vertical Spacing and
Horizontal/Vertical Offset are reversed.
603995 - PCX plugin doesn't sanitize input to avoid allocation overflows.
603998 - PCX: Calculating amount of memory to allocate may overflow.
604000 - SGI: sanitize input
604001 - SGI: Calculating amount of memory to allocate may overflow.
604002 - SGI: RLE encoded input data may write beyond allocated buffers
604004 - SGI: allocate memory consistently
604008 - GBR, PAT: sanitize input data
604078 - Crash when pressing Backspace with Free Select Tool

Overview of Changes from GIMP 2.6.8 to GIMP 2.6.9
=================================================

* Bugs fixed:

612618 - Font selection remains visible
622234 - gimp.desktop: image/x-psd in MimeTypes twice
622196 - Unportable test(1) construct in configure script
620604 - Description of "histogram" procedure is slightly inaccurate
541586 - Tool options not saved/loaded correctly?
614153 - Importing PDF files with long titles
600112 - blur-gauss-selective.exe crashes
599233 - Dialog of "Save as BMP" ignores changes which are not made
with a mous
565001 - Text-Tool crashes when edit a 2.4.2 version xcf
565001 - Text-Tool crashes when edit a 2.4.2 version xcf
610478 - Layer preview suddenly stops getting updated
609026 - leaks shared memory
609056 - Exporting to Alias PIX format fails
608188 - a few strings in Save as... > Raw image data dialog are always
in English
604820 - GEGL Operation "path" crashes GIMP
603711 - Crashes when using path tool
607242 - GIMP 2.7.0 fails to build against libpng 1.4.0
606372 - Saving to .ppm fails on indexed colorspace
605237 - the "Antialiasing..." message in the progress bar does not show
translated
604508 - gimp-layer-new-from-visible should work from updated projection

* Updated and new translations:

Asturian (ast)
Basque (eu)
Burmese (my)
Catalan (ca)
Chinese (Hong Kong) (zh_HK)
Chinese (Taiwan) (zh_HK)
German (de)
Italian (it)
Latvian (lv)
Low German (nds)
Romanian (ro)
Simplified Chinese (zh_CN)
Slovenian (sl)
Ukrainian (uk)
Valencian (ca@valencia)

Changelog:

Allow specifying the written language in the Text Tool. This helps with choosing an appropriate font, or appropriate glyphs for the selected language.
Moved 'Text along path' from tool options to the text context menu.
Add diagonal guides to the Crop Tool.
Support rotating brushes.
The Smooth Stroke feature from GIMP Painter was ported to GIMP.
Added 'Rule of fifths' crop guide overlay.
Added an icon for the Desaturate tool.
Support loading 16bit (RGB565) raw data.
Added palette exporter for CSS, PHP, Python, txt and Java, accessed through the palette context menu.
Support printing crop marks for images.
Made the Pointer dockable show information about selection position and size.
Replaced the brush scale control in tool options by a brush size one that works in pixels, and does the right thing when the brush changes.
Improved the Free Select Tool on-canvas feedback.
Made it possible to use GEGL for scaling images.

Release Notes Übersicht http://www.gimp.org/release-notes/gimp-2.8.html

Changelog:
Core:

- Make tag matching always case-insensitive
- Let the tile-cache-size default to half the physical memory


GUI:

- Mention that the image was exported in the close warning dialog
- Make sure popup windows appear on top on OSX
- Allow file opening by dropping to the OSX dock
- Fix the visibility logic of the export/overwrite menu items
- Remove all "Use GEGL" menu items, they only add bugs and zero function
- Improve performance of display filters, especially color management
- Fix the image window title to comply with the save/export spec
and use the same image name everywhere, not only in the title
- Fix positioning of pasted/dropped stuff to be more reasonable


Libgimp:

- Move gimpdir and thumbnails to proper locations on OSX
- Implement relocation on OSX
- Allow to use $(gimp_installation_dir) in config files


Plug-ins:

- Fix remembering of JPEG load/save defaults
- Revive the page setup dialog on Windows


Source and build system:

- Add Windows installer infrastructure
- Add infrastructure to build GIMP.app on OSX


General:

- Lots of bug fixes
- List of translation updates

Changelog: http://git.gnome.org/browse/gimp/plain/NEWS?h=gimp-2-8