Depending on how much they actually saved, there might be a chance of TPM being scanned at 4K or even 8K. That is if they kept all the FX data and all the o-neg elements before the FX were added, they could scan those at 4K or 8K and re-render the FX. This would of course be really expensive and complicated and I wouldn't expect Lucas to show this much respect even to a prequel.

The same could be done with the SEs, (even the 2004) again, provided they kept the digital FX files and it would be much easier because it is much less footage. And it would of course require scanning all the OOT first, which would be great - all the 3 films would be preserved in OOT and SE at 4K.