In last week's Linux 2.6.39-rc6 announcement we knew at least one more -rc was due before going gold in this cycle, but now it looks like this will be the last. This puts the final release of the Linux 2.6.39 kernel in approximately the next week.
There's really nothing too excited about 2.6.39-rc7 per se besides some HPFS file-system fixes and addressing some other regressions in the open-source kernel.
Bit more information on LKML.org. Overall the 2.6.39 kernel is turning out to be a great release so far, sans the outstanding power regressions.