They're talking about the new model announced, with a larger battery and ARM architecture. Not released yet, I don't think.
The new model is Intel or amd unless I missed something. They said in the video the battery life was entirely from video playback, which can be run on efficiency mode
Correct, it's in pre order now. It is actually x86 though, not arm
The new Framework Pros are still x86, but the newest Intel generation appears to provide a substantial boost to efficiency.