We're finished with 0.7.3
Downloads for FreeBSD and for NetBSD:
http://supertuxkart.sourceforge.net/Downloads
A video of STK 0.7.3:
http://www.supertuxkart.de
Our forum:
http://forum.freegamedev.net/viewforum.php?f=16
So now head to our downloads page, enjoy and give us a lot of feedback on the forum!