Beta 7 introduced localization, so it's really new. I wrote a short note about everything that was new on my blog . There are many new things, so if you need features, I recommend reading them.
In fact, you can still use Resx anyway, but you should understand that the default resolution is that the engine tries to find a resx file that matches the view.
For example, if you have an HomeControlleraction called Locpage, you need to have Views.Home.Locpage.cshtml.en-GB.resxEN-GB to support the local language. The best part, however, is that you no longer need the resx file :-). You can just implement your own implementation IStringLocalizerand IStringLocalizerFactory, and it will work. You can see the code for this on my blog above.
, GitHub, : https://github.com/aspnet/Mvc/tree/dev/samples/LocalizationSample.Web.