I forgot to mention in my upgrading to MVC beta post to mention one little gotcha. Since the MVC team renamed Html.Form() to Html.BeginForm you will have to update all your references. However, you will also have to swap the logic that is being used.
When using Html.Form the parameter order was "Controller" then "Action" (on the simple overload),
Now, when using Html.BeginForm the paramter order is "Action" then 'Controller" (on the simple overload).
If you do not notice this subtle change you will assume everything is good to go. You will only notice the problem when you run your application.
Just thought I would mention this, happy upgrading.
Till next time,