So I’ve installed VS2010 today. Installation went quite well but you might want to uninstall the Silverlight 3 SDK because that gave an issue on my machine.
The VS logo has changed colors:
Usual license stuff…
5.6 Gb on disk required…
And there we go… This took about half an hour on my machine. Please note that I first expanded the .iso to a directory. Doing this on an external disk might speed things up…

Sharepoint developers: look at this!
And for the Silverlight people, yes, we can now do drag&drop databinding using the data sources window:
