The new features allow you to do things like remotely access your PC so you can play games on the go, stream games like World of Warcraft and League of Legends, and access NVIDIA GameStream tech on a GeForce GTX gaming notebook. It's also been upgraded to Android Kit Kat OS and there's word that Portal is being ported over too.
I've never been huge on mobile gaming. As much as I want a 3DS, I know it would spend most of the time just getting shuffled around my room. However, the idea of streaming Titanfall on a handheld platform is very, very intriguing. Scroll down to see the official newsletter outlining some of the updates to the NVIDIA SHIELD.