RTX 3080 TUF 10G some are waiting already several weeks...some since september as i heard.
RTX 3080 TUF O10G is more often sold as far as i can see here in switzerland.
RTX 3090 TUF 24G dont know much aboout it, also no information given.
RTX 3090 TUF O24G yesterday it was written beginning of january something like 1.1 to 8.1 but yeah you have to take this information always with a grain of salt.

RTX 3090 are available in different shops including digitec but more the cheap versions for currently a way to high price. If you want to watercool carefuly check, some dont have watercoolers available.