You have a finely-tooled Android smartphone, which you keep on the bleeding edge of all things software. It's nothing for you to grab a USB cable and start flashing things on a moments notice. You will have the most up-to-date Android device possible, no matter what hoops are needing jumped through. You're among friends here.
What if you also have a Pebble to go along with your sleek Android sex machine? Did you know it's just as easy to keep things updated to the latest and greatest there, too? There are even beta builds to flash! Follow along.
If you get stuck, or things break, going back is easy. Uninstall the beta Pebble app from your phone. Put the Pebble in a recovery mode by pressing back, up and select for 30 seconds (you'll see "loading ...") and go through the regular setup to go back to the latest stable build.
While this is mostly for folks developing Pebble apps to worry about, the new firmware seems stable and it's so easy to flash that you almost have to try it.
Note that if you happen to screw up your Pebble it's not our fault — you should always be able to get it up and running again, but if things go south, don't blame us.