With an event scheduled soon, I take the marketing message to be:

"We've got sooo much insanely great stuff to announce these great updates don't even make the cut."

I think the constant stream of updates is to ramp up anticipation for the main event.

They have an event scheduled for the 25th March, but it's probably going to be focused on their new video streaming service. I imagine they don't want that cluttered with a load of minor product revisions (none of the recent updates are new product lines).

There is an upcoming event which is supposedly focused on their upcoming subscription service. My guess is that they don’t want to detract from that, so they are getting these smaller updates out of the way.