It seems for the past few months I've seen quite a bit of out of band update releases.
Just this past Tuesday I got a whole new batch of updates syncronized to my WSUS server.
Provided most of them were just "updates" and not "security updates" there were still a few security updates and all in all there was a lot of updates.
You do get the occasional one off but it seems M$ has been consistent in releasing significant numbers of out of band updates.
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