Source is KeplerL2, who is generally considered a reliable source for insider hardware info, particularly on AMD GPU hardware and AMD SoC for consoles.
Previously I would have personally estimated Steam Deck 2 to release mid 2026-early 2027, but the recent info about an upcoming Steam Machine made me think that maybe I should push back that estimate.
Of course even if we assume this is reliable insider info, a lot can change in couple years, so things can definitely change.
With the death of moore’s law, that may never be possible for a handheld.
More stacking of layers (like 3D cache) and more efficient architectures and nodes will bring it closer.
However, nobody’s ever going to beat TDP. Anything you can fit into a handheld can be multiplied several times over in a stationary console.