"JWST's Results from TRAPPIST-1d"
The JWST is now looking at each of the Earth-sized Trappist planets to gain information on their atmospheres and surfaces.
The closest planets TRAPPIST-1b and 1c are confirmed to have no atmospheres. They're basically Earth-sized versions of Mercury.
TRAPPIST-1d was no detected atmosphere. There's a (very small) chance of high altitude clouds blocking sunlight transit.