With this new addition we are officially ready for web apps created with Visual Studio 2013.
.NET 4.5.1 includes a lot of improvements, but maybe most significantly, improved performance. In the past, if your site had a period of inactivity the application pool would be recycled, causing a potentially slow startup next time your site was requested due to the time it took to recompile and spin up the application pool. Now, when your application pool is recycled, it is paged to disk, so a new request after a period of inactivity should start up significantly more quickly. Microsoft says up to 90% more quickly.
The .NET 4.5.1 upgrade also includes MVC 5, which a lot of you have been asking for. It’s here now, and it’s ready for you!
It’s worth noting here that .NET 4.5.1/MVC 5 are only available on our newest servers. So if you want to start using them now, you may have to migrate your site to a new server. The good folks in tech support can help you with that, so feel free to open up a ticket with them and they will take care of you.