Raspberry Pi 2.0 ready to ship article says that a new version of the Raspberry Pi has made its way into distribution channels. Revision 2.0 boards, as the new model is known, don’t feature any substantive changes. All the changes are detailed in Upcoming board revision blog posting. The new board version incorporates some changes made due to user requests.
The board version 2.0 includes mounting holes that help to mount Rasberry Pi for various applications, which is a good addition that has been asked by many people. Resettable fuses protecting the USB ports have now been removed, making it possible to power the Raspberry Pi from a USB hub that feeds back power. There are also changes affect some of the general-purpose input/output (GPIO) signals to add ARM JTAG support. A new connector site P5 has been added which provides an additional four GPIO signals for hobbyists to use.
The new 2.0 version should appear once existing Pi stocks run dry. That may already have happened.