Preface I use Patagonia but also other manufacturers layers, so no favoritism beyond “best use” for my activities/circumstances.
Patagonia’s “Cool” Daily Capilene is still in stock like normal, though  in most colors (took a photo of the various Capilene cools but can’t post).  I’ll use this for summer athletic wear (including hiking) after wearing the LS version in winter as a … daily informal layer when away from home.
So it doesn’t look like they are getting rid of the Capilene name and “eco” wise these layers are recyclable by getting rid of them at a Patagonia store.
Wondering if it’s a supply issue with the thicker weaves or something else?  Like maybe marketing the “daily-cools” for a lighter base layer?
Add another thought is maybe Patagonia may have been advised or saw winter sales of  specific layers down.