Arduino 0020 for Windows and Mac OS X is now available from the download page. It features support for the new Uno and Mega 2560 boards and a new logo designed by ToDo. The Linux version will follow shortly.

A lot of people helped make this possible, including:

• Dean Camera of LUFA, the lightweight USB framework for AVRs that forms the basis of the USB-serial firmware on the ATmega8U2 on the Uno and Mega 2560
• Zach Eveland who got the 8U2 firmwares working and tested
• Peter Knight of optiboot, the bootloader we’re using on the Uno, saving 1.5 KB of flash memory for your sketches
• Mark Sproul who tested and debugged the ATmega2560 support (including the new stk500v2 bootloader)
• Hans-Cristoph Steiner who developed Firmata, the default firmware on the Arduino Uno and Mega 2560, and Paul J Stoffregen who ported it to the Mega

Thanks to everyone for their help!

On a technical note, the source code for Arduino has migrated to GitHub to facilitate distributed development and merging. It includes the source code for the 8U2 firmwares that we’re using for USB-serial conversion. The issues list and developers documentation will remain on the Google Code Arduino project for the foreseeable future.