If you've been champing at the bit for the magic of 10.5.7, according to a super-secret Apple source, your champing can cease on Friday. The newest version of Leopard is slated to fix a slew of networking, syncing and bluetooth issues.

Developers were seeded build 9J58 on Wednesday, April 29. This, possibly, final build corrected issues with iChat and Safari.

There is speculation that this will be the final update to Leopard before Snow Leopard's release. Apple is expected to release, or announce a release date, of Snow Leopard at WWDC at the beginning of June.

Until then, we'll just have to bask in the glory of a 10.5.7 lunatic weekend.