For September 24th, as translated by Gematsu:
14:20 to 15:05 – Mega Man‘s 30th Anniversary is Almost Here! Stage – In December, the Mega Man series will reach its 30th anniversary. As we look towards the nearly here memorial year, we’ll look back on the Mega Man titles released so far and deliver the latest 30th anniversary celebration information. Featuring Kazuhiro Tsuchiya (producer) and guests America Zarigani, Chocolat Ikeda, and Ayana.
In addition, there will be a ten-minute Mega Man studio talk following immediately thereafter, and both events will be livestreamed via NicoNico.
Tsuchiya was the producer on Mega Man Legacy Collection 2, and it's entirely possible that this event is meant to tie that in with the Blue Bomber's 30th anniversary. It would be fantastic if we got something new there as well, but we'll just have to keep our expectations in check while we wait and see.
Source: Protodude's Rockman Corner