Re: BuddyPress.org current theme
@rgauny, the BuddyPress.org theme is a custom child theme of 1.2 bp-default theme by Andy Peatling. As for other components and subnavs, you can already get most of them by just enabling such after you activate BuddyPress and creating a BP child theme or using a regular WP theme and installing BP Template Pack plugin. There are features in this site which might be released soon.
edit- oops @jeffsayre I took too long to answer