Someone started a diskussion in the German subforum about problems after updating. I think that this IS still a topic as too many users are unsure about it So the question still remains. Can we (Erel) make a pinned thread about it?
The sdk manager downloads a list of recommended items when it starts. The recommended items are preselected, if an update is available. This encouraged developers to update the recommended items as it was a matter of a single click.
Now that the items were removed from the recommended list, developers will not update the items unless they actually search and select them.