The process is the same as last time, but for those new to the Android beta:
You need to join this Google+ group (using the same google account as on your Android device):
Then you need to opt-in to the beta:
It may take a few hours from this message before you get the update. You'll know you have the new version by the new title screen!
Reporting bugs in-game is best as it provides the whole game savefile and logs for me to look at.
I'm running out of time before my trip into the Australian outback in June, so there may be a delay in responding to bugs and posting fixes, but rest assured, I'll be looking at all of them once I return to civilization. Unfortunately, it's looking like the iOS beta will not start until I get back.