Now that the KitKat update is up on the update your software page, if you get the update post here about it. Also, if you have any bugs or problems after the update let us know what they are.
This page shows that the update is rolling out now. But it is not where you can download it from. That is being sent out OTA.
Make sure you're using the update lg software button and not the update firmware button. I've got it installed and it does actually seem faster, and a few visual changes too.