Just received an email from microsoft.
"You're a fan of us and we're a fan of you.
We want to show you our appreciation, so we're giving you:
We've unlocked all characters so you can hit the ground running.
Watch your inbox on November 22 for instructions on how to claim your free gift.
Don't worry, we'll remind you.
We wouldn't be here without you,
and we know you'll do amazing
things on Xbox One.
Thank you from Xbox Live.
I don't even have a Gold account at the moment.
A bunch of people on GameFAQs are reporting they got the same thing.