As of this writing, the Raspberry Pi Foundation has introduced a brand new board called the Pi 2. While sharing the layout and price of the Model B+, the Pi 2 has been heavily upgraded.
The biggest change is the move from an ARMv6 running at 700 MHz, to a quad-core ARMv7 running at 900 MHz. The ARMv7 is a pretty big upgrade; it is what most Android releases are compiled for and the minimum version for other Linux distributions. Microsoft has even mentioned releasing a customized version of Windows 10 for the Raspberry Pi. The other major upgrade is that the RAM has been increased from 512 MB to 1 GB.
The Pi 2 is also backwards compatible with software written for the original Pi. In order to move your Pi's SD card to the newest Pi 2, follow these steps:
On the Model A, B, or B+ run these commands:
First, run the
sudo apt-get updatecommand.
After that run the
sudo apt-get upgradecommand to run the upgrades.
Next, run the
sudo apt-get dist-upgradecommand.
Finally, run the
sudo apt-get install raspberrypi-ui-modscommand.
After these tasks are completed, your operating system will be updated and you can safely move your SD card between the Pi 2 and original Raspberry Pi.