Latest Alpha or latest stable? 0.9 series or the 1.0 Alpha series?
which one is the best one to use? and whens 1.0 going stable?
and another question, does it give rss feeds of each forum?
Best? Well, Alpha is not recommended for production sites since it’s in a state of flux. For stability, you want 0.9.
When is 1.0 going stable? I don’t think there’s an answer for that yet:
https://bbpress.org/forums/tags/10
And re: RSS feeds for each forum: yes (any version.)
yeah but for 0.9 is the user WP roles/permissions intergrateed with the user/permissions of BBpress?
I think it depends on the version of WordPress you’re installing. What version of WordPress are you going to use?
WordPress 2.7 (or anything after 2.5.1 really) does not integrate well for logins with bbPress 0.9.x., although I have heard recently of a couple different ways of getting the two to talk to each other.
https://bbpress.org/forums/topic/bayanimecom-wp26-and-bbpress-09-complete-cookie-integration
https://bbpress.org/plugins/topic/freshly-baked-cookies/
Regarding user roles in 0.9.0.4, there is a user role map section to the bbPress admin where you can map the WordPress roles to the bbPress roles.
http://www.example.com/bb-admin/options-wordpress.php