I posted this to our Twitter feed a few days ago when it was announced, but neglected to do so here! Oops.
Tool will be playing at the River’s Edge Festival in Minnesota this summer, in what is being billed as their “only US show this year.” Presumably, if they are advertising that, it’s a good bet that it’s a fact (and that a premium was paid to the band). [EDIT — perhaps they mean "only remaining show this year".] At least it’s in the middle-ish of country, so it’s not too far for any of you non-foreign fans! §