If you're an Origin Access subscriber, you can play Mass Effect: Andromeda 5 days before anyone else can. EA confirmed that a 10 hour "Play First" trial of ME: Andromeda will begin on March 16.
EA's site reads, "[Origin Access] members will be able to experience 10 hours of the next chapter in the epic space opera, Mass Effect™: Andromeda before its release with the EA Access Play First Trial beginning on March 16, 2017."
It has also been confirmed that you will be able to carry over your progress to the full game, when it releases.
Mass Effect: Andromeda is scheduled to release on March 21 in North America and March 23 in Europe, for PC, Xbox One and PS4.