http://bugs.winehq.org/show_bug.cgi?id=15419
--- Comment #40 from Rosanne DiMesio dimesio@earthlink.net 2009-05-29 11:13:59 --- I think the AppDB gets the versions from bugzilla and limits them to the last 6. At least (if I'm reading things correctly), that's how it's done for searches filtered by Wine version tested: http://source.winehq.org/git/appdb.git/?a=commitdiff;h=d98e38e3059bab7c8d5ee...
My guess is that it does something similar for the list generated for test submissions, but I haven't been able to find exactly where.