The issue with solutions like this is the amount of power draw they require for the cooling potential. In non-battery powered ultra slim devices that have a low power draw. They may have a market, but they also cost a lot so that tends to be industrial applications that can absorb the cost and don’t have high thermal load.
That is why the demo is with a MacBook Air and they need to use three of them.
I expect they will yes, but they might do this gradually, eg release a new screen assembly that is not compatible with the existing edge trim.
From internals they already have this with the AMD upgrade requiring you to update other internal parts. like wifi etc