Ubuntu 12 and Fedora 17 are the latest versions of Ubuntu and Fedora but apparently not supported according to the download distribution list. (s/11/12/, basic idea remains -- only old distros are listed)
It would be more accurate to say seemingly instead of apparently. The nuance is that the description in the download list implies that only the old distros are supported, but actually at least on F17, the F16 package still works. Why on earth they would release a 32-bit package but not a 64-bit package in this day and age, however, is a mystery.
The download page is confusing. I believe it should read "Fedora X or later". Previous package was for Fedora 10 I think, and I've been using it since Fedora 12.