It sounds to me as though they've got planning permission because they've announced that there are going to be three new courts outside it, and it all sounded very definite. As far as I can recall, some seating tiers had to be sacrificed to get the roof on CC, so I imagine something similar will happen here.
As for what it will look like, I found this pic of the entire future complex on the Telegraph online, and you can see No.1 court with the three new courts just peeping out behind it. When it's closed it'll look exactly like the roof on CC.
Wow, I think I'm impressed! I'm glad Court 1 is going to look similar to Centre. It would look daft if they'd made it look too different.
I bet Court 1 will seem weird with a roof. I can never get over how different Centre is when the roof is closed. Even just watching TV, the sound is so different.