Some 70% of the 2.6.35-rc2 work are for Linux staging drivers, but besides that there is the assortment of usual work. There are also some ATI Radeon and Intel i915 graphics DRM fixes in the mix too. This release candidate also pulls in an Intel Core i7 EDAC (Error Detection and Correction) driver.
As a forewarning to next week:
In fact, for once I'm going to enforce -rc3 being sane, because the upcoming week is the last week of school for my kids. And when the kids get out of school, I'm going be offline for a while. And as a result, I _really_ don't want to pull anything even half-way scary in the next week for -rc3.
The Linux 2.6.35-rc2 kernel release announcement can be found at LKML.org.