Will the LG V35 ThinQ get Android 10 OS Update?

Will the LG V35 be updated to Android 10?

Yes. LG V35 ThinQ will get the Android 10 OS Update.
According to LG official, The South Korea version LG V35 ThinQ will get the Android 10 OS Update in Q2 2020.

For your information, The South Korea Version LG V35 ThinQ has the model number LM-V350N (LMV350N, V350N). In the U.S. The AT&T branded LG V35 ThinQ has model number V350AWM (LMV350AWM, LM-V350AWM).

LG V35 ThinQ Android 10 Update release date

LG officially announced the Android 10 update schedule for LG V35 flagships (South Korea Model only). The stable rollout of Android 10 may begin in late-Q2 of 2020 in South Korea.

As to AT&T V35 ThinQ V350AWM, AT&T and LG USA have not announced anything officially about the rollout schedule of Android 10.

The official rollout dates will be posted here, as soon as LG has announced them.