Has there been any indication that a Service Pack 3 will be released?

There have been a number of cumulative updates. In the past, there was some caution expressed regarding not applying CUs unless there was a specific issue that the CU addressed.

It has been a year since the last Service Pack. The CUs have included quite a wide variety of fixes.

It isn't clear to me how many new problems might be caused by just arbitrarily applying the latest CU.  Certainly I would begin by applying it to a test server. Certainly as well a test server will not be able to replicate the type of work load that a production server needs to support.

If no further Service Packs are going to be forthcoming, then working CUs through the upgrade process seems relevant.

If however, a more "hardened" Service Pack were planned, I would rather wait and go through that process with a hope that I would encounter fewer unpleasant side effects.

How do other SP 2010 admins handle this type of situation?