No Anisong Artist autograph sessions this year??

I went last year and didn't know about any anisong artist autograph and went with a friend to line up. He told me they were and we lined up and got one. I don't know if they were announce or not last year but we were able to get a anisong artist autograph last year. This year, I see no announcement of any anisong artist autographs, especially Aqours, but I was hoping for them or Aimer or May'n to name a few. Or iRis. Does anyone know if last year was announced? Or was it a surprise and you had to wait and line and see who was having a autograph session from the anisong lineup? If so, I might need to camp out and test the luck and hope they do have Anisong artisit autograph tickets for the artist I want. Any help would be grateful!!!