DotA Beta Testers Required!

Recently, IceFrog has opened a secondary beta testers group sign-up at PlayDotA forums. At there, he requires DotA community to join him and test the upcoming DotA 6.68 just before it's release. It looks like, he wants to make sure that the coming 6.68 is free of bugs and exploits. He also said the secondary beta group will be limited to a manageable size. So, don't feel bad if you get