Starting with GP 10.0 any service pack or hotfix now requires an update of modified forms and reports using GP Utilities. Detailed steps for doing this are in the Service Pack 4 Installation Guide or on this CustomerSource page.
Service Pack 4 brings us up to build 10.00.1368 for GP 10.0. For a complete list of the GP 10.0 versions, Microsoft has published this very handy Excel file, however as of today it has not yet been updated with SP 4 information. So I have put together a list of GP 10.0 service pack versions for the most common products.
For additional Dynamics GP downloads and other resources, please visit my Resources page.