That tracks. Intel's updated AVX10 whitepaper[1] from a few months back seems to confirm this. It explicitly states 512-bit AVX will be standard for both P and E cores, moving away from 256-bit only configs. This strongly implies AVX-512 is making a proper comeback, not just on servers but future consumer CPUs with E-cores too. Probably trying to catch up with AMD's wider AVX-512 adoption.
Nice find! I really hope so, as AVX512 is something interesting to play around with and i am pretty sure, it will play a bigger role in the future, especially with AI and all that stuff around it!
[1] - https://cdrdv2.intel.com/v1/dl/getContent/784343 (PDF)