A Raspberry Pi 2 was released today! It has a quad core chip running at 900MHz, and it has 1GB of RAM.
The new Pi’s SoC is the BCM 2836, which uses a quad core ARM Cortex-A7. It will now be able to run Ubuntu. Windows 10 will also be available for it in some form.
Read more on the Raspberry Pi site: http://www.raspberrypi.org/raspberry-pi-2-on-sale/