The Cars, The Moody Blues, Bon Jovi... All of them saud publicly that they will attend and will perform at the ceremony in the Rolling Stone magazine.
When it comes to Dire Straits, all the inductees members, except Pick and MK, said that they would like to attend and play, but it's up to MK to do it... The only DS member who talked to Rolling Stone was John Illsley to say that it depends on MK
And MK hasn't said a word yet. I know he's busy right now finishing the new album and continue the work on the secret project but... is as easy as rake a look to the agenda and say "Ok, I could go, and I will, or, I won't go"...
It's not so important anyway but I guess that any DS fan would be happy to at least see them together being inducted, it kinds of feed our fan ego to see again our favorite band in the spotlight for a last time.