(Well ... It is if you're a first class customer.)
Microsoft announced the availability of Visual Studio 2008 SP1 today (August 12). In addition to improvements in developer support, there's also a .NET Framework 3.5 SP1 that offers it's own slate of upgrades, including, "Performance increases between 20-45% for WPF-based applications – without having to change any code." (According to Microsoft.) (Why didn't they call it .NET Framework 3.6? The mind of a Microsoft marketing flake is unfathomable.)
You can read about the goodness packed into these two upgrades here. But, unless you are an MSDN subscriber (read: $$$$$) you can't download them. MSDN subscribers only, thank you so very much. A quote from the MSDN page at Microsoft:
"If you were an MSDN Subscriber, you would be able to initiate downloads of select products directly from here."
I wonder how long it will take for these to become available to the rest of us?
Dividing people into classes and delivering first class service to some and second class service to others seems to me to be a loser way to run a company. But what do I know? I graduated from Engineering.