Frogster is granting closed beta spots to players who can convince the studio that they deserve to be on the front lines of cutting-edge new content. It's fairly simple, too: Just write three sentences as to why you deserve to be part of this beta and email them in to email@example.com.
Runes of Magic's Chapter IV update will be in closed beta from April 6th through April 29th and will have no NDA attached. As you wait to see whether you won the contest or not, why not check out Massively's preview of Lands of Despair? Your eyes will thank you later.