It seems only natural that Microsoft will try to push mvc adoption for ASP.NET, to catch up with the competition. Since the early days of ASP.NET MVC, most articles on ASP.NET on MSDN Magazine seem to feature the framework as do most articles from the news and community content section of asp.net.
I consider the above strong hints, but nothing more. Even if pushing the mvc approach is evident, that doesn't mean that the event driven approach will stop being focal to ASP.NET anytime soon. Microsoft were extremely late in adopting MVC so they are now pushing hard to fill the blanks.
Also note that I'm not suggesting that event-driven is bad and mvc is good. Both architectures have their valid uses and distinct merits. What was pretty bad, was that up until recently there wasn't an easy way to implement mvc on ASP.NET so people would have to get extra creative with the event driven approach in cases where mvc would be more appropriate.
So, no I don't see Microsoft giving up the event driven approach in favor of mvc, it doesn't make sense.