Today we are releasing a new version of both bbPress 0.9 and bbPress 1.0-alpha.
The 0.9.0.4 stable release includes a security fix to stop a potential XSS attack on login pages with Internet Explorer 6, so it is highly recommended for all users.
Additionally, the 0.9.0.4 release includes a significant MySQL speed-up fix for front pages and forum pages that was discussed in the forums. Thanks to anotherdan and _ck_ for their efforts on that one.
The 1.0-alpha-5 release also includes the above fixes as well as an important fix to WordPress integration. Namely, automatic synchronisation of user roles should now work as expected.
You can get them both from the download page.