People are just starting to write on offtopic things while waiting, as there are no updates/news from Alphacool's side
As for better searchability of this thread to enable potentially more people informing about their interest in block production, imho thread creator (if he has permissions) or forum mods should rename thread from 'Palit GameRock RTX 3090 waterblock' to 'Gainward Phantom, Phantom GS, Palit GameRock, GameRock OC RTX 3090, 3080 waterblocks', so that is found even if owners of seven other cards of this PCB search for liquid cooling options for theirs. Though it will still require them to register in forum to post about interest, even if thread is found.
Maybe even worth updating OP with eg. partnumbers like:
Palit GameRock OC RTX 3090 NED3090H19SB-1021G
Palit GameRock RTX 3090 NED3090T19SB-1021G
Palit GameRock OC RTX 3080 NED3080H19IA-1020G
Palit GameRock RTX 3080 NED3080U19IA-1020G
Gainward Geforce RTX 3090 Phantom GS NED3090H19SB-1021P
Gainward Geforce RTX 3090 Phantom NED3090019SB-1021P
Gainward Geforce RTX 3080 Phantom GS NED3080H19IA-1020P
Gainward Geforce RTX 3080 Phantom NED3080U19IA-1020P
Interesting, that Gamerock,& OC,Phantom, & GS of 3070 seem to carry same air cooler and have same card dimensions. Maybe it's possible for them to also be on same PCB? But then again, with budget & TDP of 3070 i find their owners less likely to search for LC options. For same reasons they will be way more numerous though.