Doesn't affect me using Foundry so I'm fine with it. However, I didn't get the core books in time during the OGL disaster when they sold out, so I'm thinking these news ones might be a nice purchase for myself this Christmas :)
Very happy to read this article today. WotC should just sell the IP of Dark Sun to Athas.org and let them publish 5e products for it. If they want to tie that into DMSGuild fine. Athas.org are the only custodians of the Dark Sun lore that I trust after seeing what WotC did to Spelljammer and...
"Hey WotC, when are you going to release errata/fixes for this adventure?"
WotC: "Hey look! A new cover!"
"Yeah, but you didn't update the adventure at all and there's all these problems on pages..."
WotC: "Hey, did you see the new cover though!"