Design
There have also been some changes to the physical layout of the Raspberry Pi motherboard, although it remains physically the same size as the Pi 2. The power and activity lights have migrated from the top-left to the bottom-left of the board, which may be a problem depending on your case's design. The "RUN" (reset) header is also now on the other side of your GPIO pins....
Raspberry Pi 3 - Wi-Fi tests and benchmarks
There have also been some changes to the physical layout of the Raspberry Pi motherboard, although it remains physically the same size as the Pi 2. The power and activity lights have migrated from the top-left to the bottom-left of the board, which may be a problem depending on your case's design. The "RUN" (reset) header is also now on the other side of your GPIO pins....
Raspberry Pi 3 - Wi-Fi tests and benchmarks