Based on some the past 30+ years of Federal governments in Canada there is even more incentive to get laws passed through Parliament this year.  Typically, in a majority government, Parliament is prorogued roughly halfway through the 4-year term in order to start a new session with a fresh Throne speech.

A fairly obvious time to prorogue the government, if the Liberals are following this tradition, would in mid September, just after the summer break and pretty much bang-on the halfway point between Trudeau taking office (Nov. 2015) and the writ being dropped for the next election (August/September 2019?).

Obvious Trudeau and the Liberals are not required to prorogue Parliament in September, but there is a good chance they will.