You may want to look at the "recruiting now" section of the RAF Careers website, particularly the reference to tracking submarines under the Wsop category. The recruitment campaign has already started.
RB,
I just did and pulling up the WSOp page, there was a photo of a Tornado F3 (Never an option for a WSOp and no longer in service), plus background pictures of Nimrod (no longer in service) and someone commenting on life at RAF Kinloss (yes, you guessed it - no longer in service as RAF Kinloss)!
But you are correct in that the initial picture does state 'recruiting now'