Few months after releasing the RTM of SharePoint 2010, Microsoft provides the first cumulative update.
As updates are available individually, we can ask ‘is it really a cumulative update?’; moreover, these first updates have been delayed as they should be delivered in June and no KB are available yet; please, Microsoft, you were in a good way of delivering updates with SharePoint 2007 (real CU and KB available) so continue it that way!!!
Anyway, you can find and download the KB here
Microsoft SharePoint Foundation 2010:
KB 2028568 – Download
Microsoft SharePoint Server 2010: