I'm still not sure if it's Yes opening for Frampton, or vice-versa. Heck, maybe they'll play an extended blowout version of Do You Feel Like We Do together as an encore. There are some dates already announced and more expected to come out over the next few weeks/months.
YesWorld: The YES Online Service:
"Yes and Peter Frampton are reuniting for a twenty-five city national co-headline summer tour, which kicks-off in early June and runs through the middle of July.� The total length of the show is three hours.
The two performed stadium shows together in 1976, including a show to more than 100,000 at JFK Stadium in Philadelphia. Preliminary dates are now on the Tour page. More dates and on-sales coming soon."