This would be in London next year.
I think London is a great Masters cup venue for doubles, I'm sure there would be many spectators.
I remember that Kas once said that it annoys him when he sees the same guy each day the whole year and that's why he likes to play with different partners. But I guess if they play the Grand Slams, as many Masters events as possible and some optionals, it should be possible. There are teams like Fyrstenberg/Matkowski, who didn't go deep in any Grand Slam this year and still have a good chance.
It looks like the year is over for Kas/Petzschner. Kas will stay in Europe and play Bucharest, Metz, Vienna and Basel with Wassen, Gicquel, Kohlschreiber and again Kohlschreiber.
Philipp is already 2nd next alternate in Beijing.