Claiborne also ran the Salty South East Cruisers Net, which was taken over by a group of 4 boaters at Claiborne's death in 2014 from a motorcycle accident, his wife died in 2013. They were both relatively young of age upon their deaths. The SSECN has a lot of information, as does the Waterway Guide net--they overlap--and I subscribe to both of them.
To my knowledge no one is updating Claiborne's books. But they remain good, for many references. Claiborne had books on the Gulf Coast, Western Florida, Eastern Florida, Georgia and S. Carolina and N. Carolina.
I had the privilege of knowing both Claiborne and Judy Young, as well as "skipper Bob" and his wife Elaine. The deaths of the primary publishers of both excellent cruising guides where they had done the routes and anchored in the anchorages.
The skipper Bob publications were bought from Elaine by Water Way guides and from what I hear, there are attempts to keep them updated. They were self published in an 9 x 12 format spiral bound format.