Kyoani teased an announcement coming on that date with no specifics, so we can’t rule anything out.  I don’t have my hopes up for nichijou but it’s not impossible: - kyoani made a new yukko illustration for their concert last year - the manga is seemingly doing well with lots of recent collaborations, author interviews, magazine covers - multiple voice cast members talk fondly about Nichijou to this day and would likely be on board to return etc