Great news that there's to be an official novelization of ALIEN:COVENANT...as it will be interesting to see what's contained in it if the movie turns out to be as 'choppy' as PROMETHEUS turned out!
But the announcement of a 'sequel' novelization to the ALIEN:COVENANT novelization is a strange one - if it turns out that they mean he's also writing a version of the follow-up's actual onscreen storyline, then great...although I wouldn't want to spoil the next movie by reading it first!
On the other hand, if it turns out that this follow-up novelization is NOT representative of the storyline in the next movie...then it's effectively a type of 'fan fiction' which will turn out quite differently to the actual next movie. If this is the case, I certainly wouldn't want to read it...in case it turns out to be a far better storyline than the movie turns out to be, thus rendering the movie disappointing for myself!
I just wish that the Japanese PROMETHEUS novelization could be made available everywhere, as I'd sure like a read of how it expanded on the movie's events. The only real info. I've ever been able to find about it's contents are listed here, for anyone that's interested - avp.wiki.com/wiki/Prometheus_(novel)
apologies, as I've missed an 'a' from that link! Here's the correct version - avp.wikia.com/wiki/Prometheus_(novel)