I have some great news for ISV's who are:
On 09/04/2008, Tim Sneath from MS Corp will visit Belgium and is willing to meet customers, partners and ISV's to answer all of their questions and give some guidance and insight on WPF and Silverlight. Check out Tim's blog @ http://blogs.msdn.com/tims.
If this is something you're interested in or you need some more info about this, please contact me
Schedule will be set up based on interest and preferred formats (1:1, 1:F, onsite, offsite, ...).