Since the SL only came out in February, I imagine it’ll be a long wait until the 2021 version comes out.
Personally, I don’t see any draw to the S-Works, apart from the badge. It’s still kitted out with several poor choice components, and at a silly price.
On other Specialized bikes, they only come with the rear triangle in carbon on the S-Works... and the S-Works has a better grade of carbon.
On the SL, the frames are identical.
You can buy a Comp Carbon, strip it down, and build a far better bike than the S-Works for cheaper.
Each to their own though!