SQL Server 2008 SP1 has been released! The big news as far as I can tell is that SSRS Report Builder 2.0 can now be deployed via ClickOnce, which should make it easier to provide this application to end users. Apart from that, it’s mostly tweaks and fixes which have already been made available in previous cumulative updates.
That said, reaching the first service pack is often a helpful milestone for persuading clients that a product is at a suitable level of maturity for deployment across their business. Think it’s tough persuading your bosses to upgrade to VS 2008 and start targetting .NET 3.5 SP1? It’s a doddle compared to getting them to upgrade operating systems or databases.