Honestly, I think they are just busy putzing around with touring non-standard countries and are taking time off to do whatever the F it is they do in their time off.
As much as I loved their first 15 years together, it's been pretty much "**-hum"s and *yawns* for me since the millenium tour back in early 2000.
THey still kick ass in concert and if they never did another album, but still toured playing the old stuff, especially if they did full-album concerts on anniversaries of their earlier works, I'd be happy with that.