Hope this doesn't go full retard...
http://www.justjared.com/2018/07/15/keanu-reeves-rides-a-horse-for-john-wick-3/
A teaser for the teaser that teases a little bit of a tease...
Like the Fast and the Furious franchise then. What's that on now, 10?
Though it seems at the end of the 2nd film he's going to be taking on the whole world as everyone is an assassin (or associated with) in the Wickverse, so not sure there's going to be anyone left for him to fight for a 4th film.
Edit: Just saw the trailer, lol, he has assassin dogs working for him
man this looks like freaktastic awesomeness