Don't have the website for this series in my saves, but Just read through the twitter posts on the official website. Only things that have been discussed since the announcement date are the theater announcements for the compilation movies and a set of headphones which licensed the likeness of Ainz for their packaging (VERY common practice in Japan). Therefore, no news yet.
i cant wait to see the second season the first one was epic and the ending was kind of a cliff hanger. be awesome if someone would make a console game like skyrim but with the complex spell casting like in Overlord, if you pulled some futures from all full dive virtual reality anime shows and add that in one crazy role playing, free rome,rpg game would be epic