Update: On Pete’s advice I’ve removed the caveat about the redundant pins on the GPIO connector. We’re committing to these remaining as power and ground pins from here on out. Damn my conservative hide :)
We are pleased to announce that schematics for the revision 2.0 Raspberry Pi Model B are now available here.
This post describes the key changes introduced in the new board revision.
Note that although we have not yet exercised our option to add additional signals to the expansion connector, developers of expansion boards should continue to treat pins 4, 9, 14, 17, 20 and 25 as DNC (do not connect).