The Atmel ATxmega128A1 and AT32UC3B1256 that come with the Atmel XMEGA-A1 Xplained kit are both pre-programmed.
The pre-programmed firmware in the XMEGA plays different sounds when the mechanical button switches are pushed.
The pre-programmed Atmel AT32UC3B1256 firmware offers features such as a bootloader for self-programming and a UART-to-USB gateway.