In the upcoming UAE tour, there is quite a big possibility of a triple century, despite the strength of each bowling attack. From a Pakistani point of view, there are two real contenders IMO: Younis and Hafeez. I'm not sure that Khan can do it again, but if he's on song, I wouldn't be surprised. Hafeez has been playing very well lately, and, assuming he strikes quickly, he could potentially occupy the crease long enough. Any of the English batsman, I believe, obviously excluding the third-class batsman in Broad, Bresnan and Swann, can score a triple, although they'll be struggling against a quality spin attack.
If not this tour, India has (reportedly, haven't checked) 2 years of home matches.