I've gotta say I'm sceptical about the images matching the story too. I guess if there was testing being done of a TT-RS/RS-TT it's possible that it might happen with a new engine/running-gear in a more 'standard' body, and not something more in keeping with the 'pumped-up' RS style; but for 'spy' shots they look pretty staged, and whoever's been charged with keeping it under-wraps is doing a really poor job.
It looks to me more like someone who works at a Jaguar dealership has decided he doesn't fancy the company car, wanted something different and felt like taking some snaps of his new ride for his buds on a TT forum!
That said though, if the text that goes with the pics has some truth in it, I like the sound of the spec! It'd be nice to see a (partial) return to five-pot given how legendary the 2.2L 5-cylinder Turbo is! Agree with jojo too - it'd make a great RS3 too!
Regards,
Rob.