The new version of Google Voice has arrived today. Previously, the Google Voice were set up so that the users had to make a request to the GV server every single time they wanted to make an outbound call, but all of that has changed. Due to Direct Access Numbers, Google has managed to speed up the whole process, which should mean using the service on your device will be easier than ever before.
If you're using an Android device (which is probably why you're here), then you've probably at least tried Google Voice at some point or another. And if you called it off because it took forever, then you should probably give it another shot. With Direct Access Numbers, everything should just be a lot smoother.