So, I was at work today, and I saw this. It's been the talk of the hardlines/electronics employees for the past few days.

Warning: Spoilers inside!

So I decided to check it out further in detail:
I'm not sure why it lists the date as December 31st of this year, but I think it's just a temporary date thing.

Do you think this is the proof that everyone's looking for? Do you think MM3D is real, or is this not convincing enough?

Edit: Thought I'd throw in some commonly mentioned things about these photos.

1. The number doesn't match what American Target numbers look like!
A: That's perfectly normal. The tag is from Canada, not the States, hence the difference. Subsequently, the price is in CAD, not USD.

2. It says there's one on the sales floor!
A: That's incorrect. That number represents how many spots it has on the sales floor. The On Hand number tells us how much there is.

3. I'm pretty sure someone just printed this off as a hoax.
A: While it's likely, no, it isn't. The tag was implemented with the shelf planogram (Which details where items are on the shelf, as well as fixture layout). So unless someone wanted to have every Target store open in Canada post a fake label, this is probably the most solid proof there is yet. As well, in the 4chan thread I stumbled upon, someone from St. Catherines, Ontario, was able to mention that the same tag existed in their store as well.

4. Why are there two known street dates (Dec. 31, 2014 and July 18, 2014)?
A: Seeing as I noticed this after it was set, it originally had July 18th set, however, it was changed between that set date and the date I took the photo.

5. Why is the current street date December 31st?
A: It's most likely a temporary date until it can be properly implemented in the system, or, it was removed to prevent some kind of issue with the release date of an unannounced game (I assume the former.)

6. $44.99! That's really expensive!
A: It may be a pre-order price, or else it's a tentative price. Don't forget that it's also in CAD, not USD.

Edit: (Nov 5, 2014) GAME CONFIRMED!