Fate/strange Fake: Whispers of Dawn will not air on December 31, 2022 as originally announced. There is no information on the new release date. However, there will still be some new footage that Aniplex will share at the end of the year. [Thanks, Comic Natalie!]
According to a statement from the official website, A-1 Pictures had no choice but to delay the release of the anime due to issues in its development. Fate/strange Fake: Whispers of Dawn will supposed to air during the Fate Project End of the Year TV Special. People can still watch some of the new scenes on that day though.
Fate/strange Fake: Whispers of Dawn is based on the Fate/strange Fake series of light novels. Ryogo Narita of Durarara!! and Baccano! fame wrote it. The story follows mages in America who attempt to replicate their own Holy Grail War. Unfortunately, they fail to perfectly recreate it, which has caused a bizarre version of the Grail War to occur.
Aniplex first announced the OVA in late September 2022 as part of the Aniplex Online Fest. At the time, it released a short trailer featuring Saber (Richard the Lionhearted). That was also when Aniplex revealed the English and Japanese cast. It will star Kana Hanzawa and Yuki Ono as Ayaka and Saber in Japanese. Meanwhile, Anjali Kunapaneni and Ben Balmaceda will voice them in English.
Fate/strange Fake: Whispers of Dawn is in development, and it is unknown when it will air. Aniplex of America licensed it for Western release.