As discussed by the Office Sustained Engineering group cumulative updates for all Office Products including WSS 3.0 and SharePoint 2007 will be released every second month.
Yesterday we released the so called June Cumulative Update. The so called "Uber" packages for MOSS will be released in a couple of days. Currently you can download the individual global and localized fixes for your specific language packs.
This is the second Post-SP2 hotfix! That means it is highly recommended to install Service Pack 2 before installing the June CU.
As usual you can find the details about the fixes and the download locations on the blog my colleague Joerg Sinemus published: