Plants vs Zombies Transmission from L.E.A.F. Teaser

The video above is clearly teasing something to do with the Plants vs Zombies franchise.  Plants vs. Zombies: Garden Warfare is just over a year old, so it's unlikely to be DLC at this point. That really leaves a new game as the only contender.

What's curious about this video, apart from the message clearly cut off before it could finish - is this image at 14 seconds in.

It appears that the undead invading your shrubbery will be the least of your problems, whatever this teaser is hinting towards.