I just received a notification for BitTorrent Sync 2.0 to upgrade. It takes me to a downloads page on the website, and I pulled down the appropriate package for my architecture (x64), kinda lost as to what I do next.
Some help would rock : )
The way I normally upgrade is more of a manual process:
If you are using a Linux GUI, double-clicking the downloaded file should allow you to extract the btsync executable.
Might be a good idea to stop the app, rename the existing file and then extract the new one to the same folder.