Add-on Updater 21.03 is now available. I expect this will be first of a series of add-on updates this week. In addition to requiring NVDA 2020.4, Add-on Updater 21.03 now presents an error message if it cannot check for add-on updates due to loss of Internet connection. As always, you can check for Add-on Updater updates through Add-on Updater itself.
