From Gnash Project Wiki
Release 0.8.9 came out on March 19, 2011.
Changes from Release 0.8.8
(git changes browseable at http://git.savannah.gnu.org/cgit/gnash.git)
* The minimum required FFmpeg version, for people who prefer it over Gstreamer, is now 51.28.0. * The configure script option --enable-i810-lod-bias, which provided a workaround for a very old driver for the Intel I810 when using the OpenGL renderer, has been removed. * Gnash now uses the system-installed libltdl rather than its in-tree copy. * NPAPI headers are now required for building the Mozilla plugin; they are normally part of the Xulrunner development package.
Improvements since 0.8.8 release are:
* Fixed playback of uncommon MPEG4 streams when using GStreamer. * Avoid drawing operations when the window is obscured, including when Gnash is used as a plugin, starting with Firefox 4.0 (GTK GUI). * Support SWF with embedded ScreenVideo when using FFMPEG or gstreamer-ffmpeg >= 0.10.12. * Fix playback of SWF-embedded ADPCM audio when using Gstreamer. * Fix playback of SWF-embedded PCM audio when using FFMPEG. * Fix swapped _framesloaded and _totalframes properties. * Fixes for several crashes, with better automated testing of the entire ActionScript API for input sanitization. * Improved ActionScript performance processing, especially for interactive applications. * NPAPI plugin: fix relative urls resolution in presence of <base> tag and "base" parameter; improved robustness and compatibility with chromium browser. Avoid blocking the parent process. * Improved SWF8 support with BitmapData.draw, BitmapData.loadBitmap, and other bitmap functions. * Re-entrant core libraries. * RTMP remoting support. * Support for PNG and GIF files in all DefineBitsJpeg tags; support for DefineBitsJpeg4 tags, and fix display of some GIFs with multiple records. * Restore support for mingw32. * fb-gnash: allow specifying size and offset of rendering "window". * dump-gnash: improved speed, sync and flexibility. * JPEG screenshot output. * Support for linear RGB interpolation mode in gradient fills. * Clipboard setting (GTK only). * More flash.geom.Rectangle functions. * Improved OpenBSD compatibility.