Well. 2027 if it happens, then it happens, but for me that will be a bad decsion. But I have a feeling it will be delayed to late 2028 or early 2029. Sony knows its business and they will not be stupid to kill the one that lays the golden egg and sell a new console that is so expensive, given that ram and other parts will be more expensive next year due to continues AI boom.
And about MS Helix project threat? It will not be a threat since its already a hybrid pc and surely will be expensive.
Let the fans enjoy PS5 and PS5 pro era more.