The Answers forums (http://social.answers.microsoft.com/forums/) are on a slightly different implementation path. The answers forums are targeting the consumers (windows and office) and the owners of those forums have been investing in feature development targeting mostly those users. Some feature work there may eventually end up in the other brands (MSDN and TechNet Forums), but further evaluation of those features needs to happen, which is currently in progress.
Specific to Forums on Answers Brand New Forums Home Page - Better layout, organization and faster page load New Thread Data - Ability for forum owners to ask forum specific questions to thread starters
All Forums Enable new locale: Australia Fixes for Far East character sets in the private search results page Bug fix for moved threads giving 404s