DotA by Valve - It's Coming!

In October 2009, DotA Developer 'IceFrog' announced a great news that he has been hired by Valve and leading a team there "to do some very exciting stuff that you guys will love". However, there was no further information revealed about it. Later, it was rumored that IceFrog is coming with Valve DotA Based Game like Heroes Of Newerth & League Of Legends. But now, this news seems to be true.UPDATE