It certainly seems like Warner Bros. has more plans for at least one DC FanDome event in 2021, although since these posts have been deleted this shouldn’t be taken as an official confirmation.
The official Warner Bros. TV Twitter account has seemingly confirmed that another DC FanDome event could be coming next year. Responding to a fan who praised this year’s FanDome event, Warner Bros. responded “It’s going to look like an appetizer compared to next year.” A second reply also said “already counting down the days until next year’s #DCFanDome.” It should be noted these tweets have since been deleted, though the screen-captures of the deleted tweets can be seen below:
With conventions such as San Diego Comic-Con and New York Comic-Con moving to an online format this year, Warner Bros. made the decision to create its own DC-focused online event. This seemed to work successfully as DC dominated news channels everywhere during FanDome and managed to build plenty of hype for its upcoming projects. It looks like Warner Bros. may continue the trend of going on its own instead of partnering with other online conventions in the future.