Looks like Intel demo’d a working system with Lunar Lake silicon today. The system ran Windows and a ‘tightly controlled demo’, but seems to at least indicate Intel has (decently) working 20A silicon already.
As a refresher, Raptor Lake Refresh for desktop (Intel 7) comes out in October 2023, Arrow Lake comes out late 2024. Lunar Lake is their late 2025 desktop client chip. Lunar Lake was originally to be 18A, but since Gelsinger made a comment about ‘first chips going to the 18A fab in Q1 2024’, it seems to indicate Lunar Lake will instead be on 20A.
Seems pretty impressive to me..