Board Thread:Game Updates/@comment-24980562-20151025022704/@comment-26574811-20151026100446

Juuryoushin wrote: Looks like a new fighter plane will come out. But we will need to do some quests beforehand.

Don't believe it will be Shinden Kai :3 翔鶴型航空母艦二番艦の改二改装実装を予定している次回の「艦これ」稼働全サーバ群共通メンテナンス＆アップデートは、同改装実装と共に、最終的に「強力な艦上戦闘機部隊」が運用可能となる新任務群も実装予定です. 少しだけお楽しみに！ ※現用機体装備の部隊です.

With the introduction of Zuikaku's K2, there will be a new group of quests that will eventually make it possible to operate a "strong carrier-based fighter squadron". Please look forward to it a bit! *The squadron is equipped with aircrafts already in service.

1. make it possible to operate => not possible to operate the unit before the quest => brand-new equipment, not just another Reppu-601. Since Yokosuka oldies can use Shinden Kai now, that's not possible as well.

2. Equipped with aircrafts already in service => Not introducing new type of aircraft, Zeroes, Shidens, Reppus, pretty much one of these.

Historically, I think this means Zero Type 21 (Iwamoto Squadron) => Zero Type 52C (Iwamoto Squadron)