"Broadcom BCM2835 SoC 700 MHz Low Power ARM1176JZFS Applications Processor 512MB SDRAM Boots from Micro SD card, running a version of the Linux operating system"
This is basically just a new footprint on the model B. I like the fact that there are more USB ports, I'm not sure I understand the point since there's only a limited amount of power this thing can provide. I guess if you are one of these people who always needs a breadboard / shield for expansion purposes, this will be quite useful. I'm personally disappointed that there's not an update to the SoC. Maybe there will be a model C? One can only hope.
My wishlist for a "Model C": >1gb RAM, 2 /4 core SoC, Improved graphics, ~$50-$75 price point