Complex sentence: Under the new contract, RDS maintained its broadcast rights to 40 Canadiens games per season under a 12-year deal, but Canadiens games are now subject to blackout outside of the Canadiens home market region.
Split into simpler sentences: Under the new contract, RDS maintained its broadcast rights to 40 Canadiens games per season under a 12-year deal. As a result, Canadiens games are now subject to blackout outside of the Canadiens home market region.