if somebody is interested, there are also articles here:
both are not very optimistic for SL/WPF.
"Will the Windows 8 team kill or promote Jupiter, given this move? I don't know. I'd assume the Windows client team is still planning on promotingWPF/Silverlight a development environment for line-of-business apps, but it's not clear from the Somasegar e-mail that this is the case."
"So there you have it. What "it" is, I'm not entirely sure. All I can say, yet again, is Microsoft is doing itself more disservice than service by refusing to offer Silverlight and WPF developers even the most bare-bones official reassurance that there are plans to continue to support these technologies in Windows 8. The silence (and promises that all will be revealed at September at the Build conference) is creating a lot of unnecessary fear, uncertainty and doubt (FUD)."
One thing is for sure, //build is going to be a big thing, either way.