Metro 2035 2015?

I saw this Easter Egg in the remake, Metro 2033 Redux...

This in-game poster seems to hint at a sequel to the last light in the game series; Metro 2035, due at either December 2015 or 2016.

It seems that the character seen in the picture wearing a gas mask may not be human. If that is the case, who are we going to be fighting?

Hopefully the sequel will give us more action and less story.

We should get a confirmation soon...