Another good size comparison shots of the Pre & 2 recent Palm products (next to the 755p & Centro):
http://www.palminfocenter.com/images...-hw-imp-10.jpg
I was absolutely astounded at how small the Pre was relative to even the Centro. It's obviously quite a bit longer with the keyboard extended but I imagine it'll still feel really good in the hand.
Heck, if anything, I'd not have had a problem with them making it a tad bit chunkier, if it would've permitted a microSDHC slot, a slightly bigger battery capacity, or a 3.5" screen (iPhone-sized).