Got an announcement for new Cast members:
- Kengo Kawashini as Tori
- Yuko Kaida as Sarariya
- Youhei Tadano as Regan (replacing the late Keiji Fujiwara)
Source.
I find it odd that on the English Anime news media that there's no mention/announcement of Log Horizon's new OP animation & song by BAND-MAID when they've already been revealed... You'd think something as big as those would be announced in the English Anime news media shortly after it comes out in Japan. But no, nothing.
Yet, they made an announcement for new Cast members...
Edited 12/14/2020:
More cast members have been announced:
- Shiori Izawa as Hua Diao
- Yoko Soumi as Leaf Lotus Nymph
Source.
Twitter Announcement.
Edited 12/21/2020:
2 more cast members announced and a 3rd Key Visual featuring the Mofur Twins (visual in the Source Links):
- Manaka Iwami as Lelia Mofur
- Nanami Yamashita as Ritoka Mofur
(Still nothing about the new OP song and Animation...)
English Source.
NHK Source.
Tweet Announcement.