Just found out twins last week!

Didn't realize there was a "Twins & Multiples" section within the community boards. Just found out last week at 6w2d that we're having twins! We miscarried our first pregnancy back in March at 6 weeks. We never got to hear the heartbeat. But this time we did! 120 and 119! My 40 week due date would put me at January 16, 2017, but I'm understanding twins don't typically go 40 weeks. Should I expect to deliver in 2016?