I read an interesting article on Blabbermouth today, in which Mikael Ã…kerfeldt from Opeth revealed that they almost became the support act for the summer Tool tour:
Other news, we’d been offered a support tour in the U.S. by TOOL but we didn’t get it this time, Hopefully in the future it might work out.
Given there have been a few complaints about Tweak Bird (not from me!), and I think there are quite a few Tool fans who dig Opeth, this would seem like potentially good news.