Seems like conjecture at this point, but I really never doubted it'd happen anyway - Cinematical (via Variety) is reporting that Hostel 3 is all but guaranteed:
"Basically, in this Variety article that focuses on film productions in Prague and the Czech Republic, a few hints are dropped that a Hostel Part 3 is almost definitely on the way -- but that it'd most likely come after Roth is finished adapting Stephen King's Cell for the Weinstein boys."
Well duh. I mean, movies don't count unless they're in trilogies any more, right?
Sorry, it's late in the day and I'm tired and this is all coming off rather hostile, when anything that keeps my man Eli Roth churning out the charnel house goodies makes me happy, and liable to post another picture of him. Mmmm Eli.