Bob2884 (and several others) from Toolarmy have said that they overheard on the radio, that Tool will be making a huge announcement regarding the US tour later this year on Monday. There also seems to be a new concert in Fresno, California on August 6 as well.   Looks like Tool might be squeezing in a few US (California only?) dates before heading off to Japan.
In other tour news, I recieved an email this morning saying that the Roskilde Festival (featuring Tool) has sold out. If you missed out, too bad!