Given the fact that this would translate to another 'intelligent' layer (snow, standing water etc.) on top of the already new 'intelligent' terrain layer, I'm quite skeptical this will be implemented in the sim on day 1. I guess it would be possible but also very heavy on our systems.
The same applies to running water in rivers and streams - a very welcome improvement if implemented but I'm afraid it's just too early. BTW rivers already needed some TLC in 2020 so I hope that the developers at least tweaked them a little bit in 2024...