From BlenderWikiReview (esp. the links, check the new structure [index]).
NOTE: Animation editors heavily changed in blender 2.5 (perhaps the biggest change, together with the UI). A 2.4-2.5 mapping based on page names is hence not possible. I created in the index a new struct, following the same rules as 2.4 one, and made the mappings 2.4->2.5 and 2.5->2.4 (using redirects).
The changes are mainly a full reorg of /Editors, and the addition of /Keyframes (as it was non-sense to keep them in /FCurves only…).
That struct might not be ideal – as usual, discussion is open. But if you want to change it, please note you’ll have to take extra caution about all those #REDIRECTs!