Probably it is his new custom shop Fender.
He played it on the WDR 2 Gig also.
Yep that's true it is a custom shop fender strat. You can see at this picture the Custom Shop logo instead of his signature.
But it is a different Custom because this one has got 21 frets and the custom has got 22 frets.
And as far as I can see the fingerboard is differtent too.
And there is a string tree on the head of Mark his guitar.