Indeed, though it never made a lot of sense to me to stop putting the PS2 chipset in. It cost them something like $20 per console, but I guess every little bit helps, even if it hasn't been the biggest cost saver (they've gone from costing about $800 per console to almost breaking even now though).
Enjoy the PS3. Be sure to go back and catch up on some classics like Uncharted, MGS4, Resistance, Little Big Planet and more. And if you happen to be a strategy RPG fan then go get Valkyria Chronicles now (I don't care if it's night and you have to break into a store to do it
).