It looks like Kojima (accidentally) revealed the 25th Anniversary Logo for the Metal Gear series, which is this year.
As you can see, it’s the iconic image of Snake in the cardboard box.
Kojima posted photos on his Twitter today of a brand new Gray Fox figure, and the 25th Anniversary logo can be seen in the corner of the box.
For more images of the Gray Fox figure, go here.
Source: Kojima’s Twitter