It's been announced that Radiohead will tour this summer in support of their (as-yet-unreleased and un-announced) ninth studio album. So far they've been announced as a headliner for OpenAir St. Gallen, in Switzerland and will also be playing at Primavera Festival in Barcelona.
We're also going to expect them to announce a string of North American dates after those events, and even possibly some UK shows, I hear Glastonbury hasn't been announced yet...! However, the band last performed live back in 2012, so if they are to play some shows, keep an eye on some surprise shows under an alias!
You can check out Radiohead’s 'rejected' theme song for "Spectre" below - it was released Christmas Day 2015.