After being canceled in 2020, NAB Show seems on track to return to Las Vegas from October 9-13, 2021 (at the moment anyway).
Proof of vaccination is required for all attendees and masks may also be required (Clark County currently requires them in indoor public spaces): https://www.radioworld.com/show-news/nab-show/nab-show-will-use-app-for-proof-of-vaxx
Despite these measures, Sony has just announced that they will not be participating in person due to the Delta variant:
https://www.sportsvideo.org/2021/09/07/sony-withdraws-from-nab-infocomm-2021/
Proof of vaccination is required for all attendees and masks may also be required (Clark County currently requires them in indoor public spaces): https://www.radioworld.com/show-news/nab-show/nab-show-will-use-app-for-proof-of-vaxx
Despite these measures, Sony has just announced that they will not be participating in person due to the Delta variant:
https://www.sportsvideo.org/2021/09/07/sony-withdraws-from-nab-infocomm-2021/