Without any planned dates and content of the updates this actually means nothing. They could put out this same message every month and we would not be any wiser, therefore I do not understand the positive reactions. Obviously this IS communication from their part, but actually as informative as no communication.
They could even use this as a vehicle to promote sales on an older title - Oh wow, we have an update planned on old game X - and then the update is like correcting a spelling error somewhere.
Take the update description of the BM66 as an example. That could mean anything. A cliffhanger is something in my mind that wants to keeps people interested for something as long as there is nothing at all...