Dota2 open-beta / free-to-play?

Someone on this forum mentioned that Dota2 is going to be open-beta in less than a month. Is that true or it'll get released straight as full?

UPDATE

Dota 2 Will Be Free-To-Play…

Ever since Dota 2 was announced in October of 2010, many have speculated on what pricing model it’ll use. Its primary rival, League of Legends, is free-to-play, and given Valve’s recent successes in the F2P market, many thought Valve, IceFrog and Eul’s action RTS sequel to the 2003 WC3 mod would also sport such a funding model. While content from Dota 2′s leaked client indicated the presence of optional cosmetic skins, as well as some sort of specialized store for these cosmetic items, the jury was still out. Right up until now.

In yet another excerpt from a yet to be posted, hour-long audio interview with SevenDayCooldown, Gabe Newell discussed Dota 2′s monetary model, revealing that it would be free-to-play, albeit with a twist, which will make it the first game to use such a model:

--- It’s going to be free-to-play — it’ll have some twists, but that’s the easiest way for people to think about it.

With regards to what kind of twists these might be, Gabe said:

--- The issue that we’re struggling with quite a bit is something I’ve kind of talked about before, which is how do you
properly value people’s contributions to a community? We’re trying to figure out ways so that people who are more valuable
to everybody else [are] recognized and accommodated. We all know people where if they’re playing we want to play,
and there are other people where if they’re playing we would [rather] be on the other side of the planet.
It’s just a question of coming up with mechanisms that recognize and reward people who are doing things
that are valuable to other groups of people.

full article