A few weeks back the rumor mill was ablaze with talk that the Big Four of Thrash (METALLICA, MEGADETH, SLAYER and ANTHRAX) talking about touring together. Those rumors have fizzled down and it seems like those four bands (well mainly the two bands whose names start with "Me") can't really put their differences aside.
So natually, new rumors are surfacing that instead of that tour, MEGADETH and SLAYER are planning a February 2010 US run with TESTAMENT and HIGH ON FIRE in tow. This sounds way more doable to me, and personally, I am way more excited to see High on Fire and Testament then I would be to see Metallica and Anthrax. Plus, this seems like a much more plausible tour to happen.
I sure hope it pans out. If it does, we will be sure to report about it as soon as more info becomes available.