Some great news! The latest and greatest BibleTime is now available on Gentoo, thanks to Jaak's hard work. From his e-mail to the developers:
Gentoo Linux users can now have up-to-date BibleTime from the new BibleTime ebuild overlay accessible via layman. To use the overlay, you first need to have layman installed and properly configured. To install layman, type the following and follow the on-screen instructions:
# emerge -a layman
To add the BibleTime overlay to Gentoo, issue the following commands:
# layman -f
# layman -a bibletime
Portage should now have access to the latest BibleTime ebuilds. In case of bugs or other problems with the ebuilds in the BibleTime overlay, please DO NOT file a bug at the Gentoo Bugzilla. Please instead report any bugs at http://sourceforge.net/tracker/?group_id=954&atid=100954 which is our bug tracker, or to the BibleTime development mailing list. We hope you enjoy our latest ebuilds! 
Not only that, Martin has been working on getting BibleTime up and running on Mac OS X. We don't have an installer to test it out yet, but I'm sure that's not far away.
Well done to the developers!