Today we released Preview 1 of ASP.NET MVC 5.2.5, Web API 5.2.5, and Web Pages 3.2.5 on NuGet. This is a patch release that contains only bug fixes. You can find the full list of bug fixes for this release in the release notes.
To update an existing project to use this preview release run the following commands from the NuGet Package Manager Console for each of the packages you wish to update:
Install-Package Microsoft.AspNet.Mvc -Version 5.2.5-preview1 Install-Package Microsoft.AspNet.WebApi -Version 5.2.5-preview1 Install-Package Microsoft.AspNet.WebPages -Version 3.2.5-preview1
Please try out Preview 1 of ASP.NET MVC 5.2.5, Web API 5.2.5, and Web Pages 3.2.5 and let us know what you think. Any feedback can be submitted as issues on GitHub. Assuming everything with this preview goes smoothly, we expect to ship a stable release of these packages in a few weeks.