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.

Cable-tester-10-pair Cable tester Using arduino Mega 2560, sample good condition for 10 pair or 10 circuit. Picture Open circuit and another closed circuit for 10 pair Mini harness Checker test 9 pair ...

Arduino Mega 2560 DIY hexapod robot 11:22 am April 18, 2023 By Julian Horsey ...

Meanwhile, the Arduino Mega is getting the same USB chip along with an ATMega2560 processor with twice the memory. Right now only 128K is available, but that's a software limitation and they're ...