Most would expect a newer version to have a faster processor, more memory and stuff like that. Although, there is one thing that makes me particularly excited… the new USB chip. Why?
We replaced the aging FTDI chipset with a custom made usb-serial converter built with an Atmel ATmega8U2 this provides lower latency and <snip> users will be able to reprogram the USB chip to make the board show up as a variety of USB devices (Keyboards, Mice, Joysticks, MIDI etc).
So why is this so exciting? This opens up a whole new world for Arduino developers who can finally make retail quality PC devices using the standard board without having to spend thousands of dollars as they have before.
Expect an explosion of creative devices in the coming months!