from their newsletter:
"This week, we announced the Shadow, our Dexterity/Intelligence character class. He prefers to use fast-hitting weapons such as daggers or claws to dart in and out of battle, while laying Traps or Remote Mines and controlling the flow of combat with deadly spells. You can read more about the Shadow here: http://www.pathofexile.com/classes/shadow
We're opening up the Path of Exile Beta to everyone this weekend, May 11-13, so that we can stress-test our servers in preparation for entering Open Beta. This Open Weekend is the ideal time to invite your friends to play the game with you. The Shadow class will be playable from this weekend onwards.
The public weekend in March was a huge success and attracted 47,000 players. We're keen to try to push that limit! There's a list of frequently asked questions about the public weekend here: http://www.pathofexile.com/publicweekend/
Today we deployed the 0.9.9 Beta patch, which has been described as the most important patch the game has ever had. In addition to adding ten new skills, four new support gems, a new quest, monster type and many bug fixes, it introduced a completely revamped monster AI and behaviour system. We're pleased to say that these changes have made Path of Exile more fun and challenging than it has ever been before.
Due to the substantial balance changes, we have migrated all existing Beta characters and items to the Legacy League (like we did with 0.9.8) so that there's a fresh economy and ladder in both the Default and Hardcore leagues.
This is a great opportunity for you to show your friends the Path of Exile Beta and play alongside them while exploring the new updates. We're hosting developer-run events at various times over the weekend, so you can show off the skills you acquired playing earlier versions of the Beta too.
I look forward to seeing you in game!
Grinding Gear Games"
Open access to everyone, everyone can try and play this jewel during next weekend. :)