Well, since VS2010's interface is written in WPF, it'll have to stick around as ...

hvs on Sept 9, 2010 | parent | context | favorite | on: Microsoft wrestles with HTML5 vs Silverlight futur...

Well, since VS2010's interface is written in WPF, it'll have to stick around as long as that is true. Plus, Microsoft never kills a technology, they just don't improve it.