Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
There it is.
The most painful part of 2.6.13 is likely to be the fact that we made x86 use the generic PCI bus setup code for assigning unassigned resources. That uncovered rather a lot of nasty small details, but should also mean that a lot of laptops in particular should be able to discover PCI devices behind bridges that the BIOS hasn't set up.
We've hopefully fixed up all the problems that the longish -rc series showed, and it shouldn't be that painful, but if you have device problems, please make a report that at a minimum contains the unified diff of the output of "lspci -vvx" running on 2.6.12 vs 2.6.13. That might give us some clues.
The changes since -rc7 are pretty small, full shortlog and diffstat of that appended.