Centre Ice exhibition schedule
I haven't been able to catch any of them yet, but there are preseason games being shown on NHL Centre Ice this year, at least in Canada. It appears two or three are available each night — generally games located in Canada or big television markets like New York.
I haven't been able to find a programming guide for the games so far, but I'll update with one if it becomes available.
UPDATE On tonight are Toronto at Ottawa, New Jersey at N.Y. Rangers and Philadelphia at Pittsburgh. The only game available tomorrow will be Colorado at Detroit.