A Bit of WPF love. No, Bits of it!

Tim Sneath posted an answer to the question I asked on friday (well, posted something that answered my question, probably without him being aware of it in the first place):

Most of the performance improvements and some of the feature improvements will also be included in a forthcoming service pack for .NET Framework 3.0 - I don't think we've talked externally about delivery mechanisms for this at this stage, however.

Good news! So I was right, there is a service pack in the pipeline!