Things are getting a little more intriguing in the world of the Grateful Dead.
After witnessing the massive demand for tickets to the five Fare Thee Well 50th anniversary concerts in Santa Clara, Calif. and Chicago, rumors now say that the group may hit the road in their wake, with John Mayer stepping in for the late Jerry Garcia, starting in October.
There are reports, in fact, that Mayer and the Dead have already started rehearsing together, though one of the band's representatives tells Billboard that such speculation is "premature."
Dead watchers on social media, meanwhile, are also guessing that Mayer will actually tour with Dead guitarist Bob Weir's band Ratdog -- possibly with drummer Bill Kreutzmann joining.
The reunion shows will bring in an estimated $50 million in ticket sales, plus merchandise and revenue from pay-per-view and movie theater simulcasts that are planned for the shows.
Kreutzmann, meanwhile, is publishing a memoir, "Deal: My Three Decades of Drumming, Dreams and Drugs with the Grateful Dead," on May 5.