Christine wants to rejoin the band according to The Guardian

[jbrownsjr]

Originally Posted by louielouie2000

I'm surprised as well. I knew they would have to wait until January 9th at the earliest, but I doubted we'd hear anything before March or April. My guess is the media blitz is still several months off. Thanks for the confirmation though, Mick!

If they are tour this summer, there's going to be a couple months of rehearsals. Those should start around March/April I would guess.