The latest version of the Pi is out and as expected, it has a faster CPU. Version 2 had a 900MHz Cortex-A7 chip. Version 3 has a 1.2GHz Cortex-A53. Still quad core and a little faster, but the big difference is that the A53 is a 64-bit processor where the A7 was 32-bit. We will have to wait for an OS upgrade to take advantage of that, but I doubt having 64-bit will make much difference for most applications.
The really great upgrade is that version 3 has built in wifi (802.11n) and Bluetooth.
I should be receiving one shortly and will let you know what I do with it.
Here is some information provided by RS-Components, a great source for all things Pi.
How to set up your Raspberry Pi 3
Comparison of Raspberry Pi 3 and the Raspberry Pi 2