Is the pit entrance and wall going to extend into turn 3?

yes.

They have a webcam up now or maybe they have for a while and I'm just discovering it now.

https://delawarespeedway.com/fan-guide/webcam

This would be handy all year to see the weather conditions at the track on race night. Often been times when it is pouring here in east london and it is desert like at the track.

Pulled in to take a look today, forgot my camera, typical of my style, anyways they are pouring the concrete lane tomorrow am!! Exciting and looks pretty cool!

The extended racing groove or "sidewalk" as we drivers call it, is now complete.  Work continues on extending the pit wall into the corner.  Lookin good folks. Love the webcam!

I assume there is still another lane of concrete to go down for pit in?