For those not familiar, POE is an upcoming diablo~esque dungeon crawler style game that is currently in development.
This weekend (may 12th) is their free public beta open weekend to try it out. Very similar to what Blizzard did with D3 beta.
It appears to be a much much more in depth game in regards to skills and what not and all the previews I've read speak very highly of the game so it should be a fun weekend to take my mind off Diablo for a bit.
More info on the beta
And info on the game
Free to play, no monthly fees, etc. Follows an "always online" style system like diablo III and company will rely on micro transactions (which they specifically state nothing you can buy will give players any sort of tactical advantage in game)
video showing off some features.