Hi Guys. Just as a heads up I bought a series of new nano's to build some knobsters. I was using the beta and decided to flash one of the Arduino's. It started to flash and then lost connection. After that point I was unable to communicate with the nano. So I ended up burning the bootloader to reset it.
Good how to here(https://www.youtube.com/watch?v=9HAnr___gkI)
Then I was able to use the nano again. I then installed the full release version and it flashed without issue.
Just a word of caution to save yourself from having to burn a bootloader.
Anyhow good luck!