Service Pack 1 is on track for release at the end of June.
SP1 releases for both Office client suites and SharePoint server products will be made available. All language versions of SP1 will release simultaneously. Initially, Service Pack 1 will be offered as a manual download from the Download Center and from Microsoft Update, and no sooner than 90 days after release, will be made available as an Automatic Update.
SP1 will include many interesting changes. Across the client suites and server products, SP1 offers a sprinkling of improvements to make a strong 2010 release wave even stronger. During TechEd and beyond, teams on http://blogs.office.com will update their blogs with more specific details of 2010 Service Pack 1 contents.