The general consensus here seems to be that replacing the RAM/hard drive in the current MBPs doesn't void the warranty on the machine. I thought I'd call Apple a few times to inquire about that, and here's what I got: Call #1: "Greg" in tech support. He said replacing the hard drive yourself voids the warranty on the hard drive itself, but doesn't affect the warranty on the rest of the machine. Call #2: "Greg" (different Greg) in business sales. He said you CANNOT replace the drive yourself without voiding the entire warranty. I said I'd just been told that you can replace the drive yourself; he put me on hold, talked to someone else, came back, and said nope, you have to have the drive replaced by an authorized service center. Call #3: "Justin" in tech support. He said that opening the machine, period, voids the entire warranty. Argh.