Wow, this forum is less active than I expected. To anyone reading this before April 1st 2012 AD: the PoE developers will open the their beta this weekend to stress test their servers.
I don't know if you'll be able to sign up and immediately play but it wouldn't hurt to try. You can still sign up and play when the servers are up. The beta starts today in five hours from the time of this post.
My handle in this game will most likely be some variation of Niemand. We should form a party, click monsters to death, and pillage corpses sometime.