Sony released the v1.7 firmware update for PlayStation 3, which most notably adds rumble support for PlayStation and PlayStation 2 games when played with a PS2 Dual-Shock controller and other supported accessories connected to the PS3 via USB adapter. There's also improved support for original PlayStation games, so they can be played directly on the PS3 in addition to the PSP - though you'll have to wait for the current crop of downloadable games to be re-released to work with this patch (the buzz is "sometime in May"). There's also now a method for transferring your legacy PlayStation saves from your PS3 to your PSP, so you won't lose your progress (take that, Microsoft!). And if you have multiple logins on your PS3, you can now press Triangle to set auto-login preferences...
