>>April 12th ? (http://www.microsoft.com/visualstudio/en-us/)
>
>So, basically, Visual Studio 2010 launch is the same as .NET Framework 4.0. Is that correct?
AFAIK

>I hope they have adjusted the fact that sometimes the site cannot respond when we send a new update. Or, maybe it is something that has to be fixed in IIS. This is something I have on occasional basis on IIS 6.0 with .NET Framework 3.5.

By 'send a new update' do you mean you use the publish option from VS?
If so do you mean that the actual 'Publish' doesn't work or that clients don't see the updated version ?