1935-E The Buzz Messengers

The twenty-third light novel of the Baccano! series is '1935-E The Buzz Messengers''. '''

Originally projected for a November 10 release, but since postponed. Dengeki Bunko has issued the following apology:

お詫び
2017年11月に刊行を予定しておりました電撃文庫『バッカーノ！1935-E The Buzz Messengers』は、製作上の都合により発売が延期となりました. お待ちいただいております読者の皆様には、深くお詫び申し上げます.

Ryohgo Narita has been experiencing joint problems, which he has explained on Twitter have been severe enough that they are interfering with work.

Synopsis
Originally on the Dengeki Bunko website, has been taken down:

The casino party proceeds towards its climax and the fated third night. When everyone – including Firo, who is still worried about Ennis' kidnapping – gathers at the casino, the curtain rises on the final frenzied baccano–

Chapters
To be released.

Trivia

 * Ryohgo Narita referred to 1935-E as 1935 END & EPILOGUE in his afterword for 1935-D: Luckstreet Boys. The reason for the change in title has yet to be explained.
 * The title could be a reference to the jazz group The Jazz Messengers or the punk rock band Buzzcocks.