According to www.rockol.it, which is normally quite reliable, it seems that the tour will kick off in canada in may (which is no news i think). Then they will head to the States during the summer. Then Europe during the fall (does this mean arena and not stadiums??), followed by South America, Japan, Australia and New Zealand. The site also makes it clear that these are just rumours, but our reliable sources here maybe can say how far we are from the truth.
ciao