It’s a significant update. The Arduino UNO and Arduino Mega 2560 update the Duemilanove and Mega respectively. They now use an ATMega8U2 instead of an FTDI USB to serial converter chip.

The Arduino Mega 2560 board is probably less known than the Uno, and you may even have skipped this Arduino board in favor of more popular or more recent hardware in the Arduino family. However, it ...