Billboard has reached out to BTS' representatives for further details.
Last April's inaugural Bang Bang Con was a free two-day online concert series featuring live performance footage dating back to 2015. The event arrived after the act's 2020 Map of the Soul tour was postponed due to the COVID-19 pandemic.
That summer, BTS followed up with Bang Bang Con: The Live, a 90-minute pay-per-view concert. The virtual performance was held June 14, a day after the band's seventh anniversary.
BTS recently dropped the new song "Film Out," a collaboration with J-pop band Back Number that appears as the ending theme in the new Japanese film Signal: Long-Term Unsolved Case Investigation Team. The track will be included on the the septet's next Japanese-language album, BTS, The Best, which is scheduled for release on June 16.
Below, see BTS' Bang Bang Con 21 announcement on Twitter.