I have installed the nightly build of the AspNet-identity assemblies from here
It seems that the AuthenticationManager class from the RC version is gone from the RTM version (Microsoft.AspNet.Identity.Owin.1.0.0-rtm-130914).
It used to be in the Microsoft.AspNet.Identity.Owin assembly, but its no longer there.
This class had the methods: SignInAsync and CheckPasswordAndSignInAsync that are used in the default project you get when creating new ASP.Net web application MVC project with Individual User Account authentication.
Where is the AuthenticationManager now? Or what to use instead?