Hier die Info, stand auch in den News auf atmel.com:

ATmega2561 and ATmega2560 samples are available now. Production will start in 3Q05. ATmega640, ATmega1280 and ATmega1281 will be sampled in 2Q05 with volume production in 4Q05. The ATmega640, ATmega1280 and ATmega2560 come in a 100-pin housing, while the ATmega1281 and ATmega2561 are available in a 64-pin package. Pricing for 10,000 units starts at $4.75 for the ATmega640, $6.00 for the ATmega1281, $6.40 for the ATmega1280, $7.50 for the ATmega2561 and $7.80 for the ATmega2560.