There is no guarantee that the set will be released on that date because Wizards has been known to change the release schedule to better fit their needs. But, they’d need a compelling reason to do so now that retailers have been given that date.
We do not know what all of the units will be in this set. There has been supposition floating around as to what will and will not be in the set. Luckily we do know what will be appearing. Some of this was made public at Gencon and some was revealed in various postings on Richard Baker’s official blog.
No confirmed nationality
R Hybrid Battleship/Carrier (new sculpt, presumably the Ise/Hyuga)
Germany
UC – Atlantis – Merchant cruiser raider (GenCon & Blog)
C – TA-25 – DD (GenCon) (Pegaso Reprint)
Japan
R – Kaga – CV (GenCon & Blog)
UC? – Chitose – Seaplane Carrier (GenCon & Blog)
Poland
C – ORP Blyskawica – DD (GenCon & Blog)
Soviet Union
R – Sovyetskiy Soyuz – BB (GenCon & Blog)
C – Il Sturmovik – Plane (GenCon & Blog)
Soviet Sub (name not revealed) (GenCon)
United States
R – USS Quincy – Baltimore Reprint – CA (GenCon & Blog)
C – USS Bagley – DD (GenCon & Blog)
Future units/nations not confirmed to any given set
Not confirmed nationality
Victory Ship (GenCon)
Minesweeper (GenCon)
Netherlands
Java light cruiser (GenCon)
Germany
Atlantic Breakout Bismark or Tirpitz (GenCon)
Japan
UC Jintsu sistership
(GenCon)
Netherlands
Java (GenCon)
United States
R USS Hornet (Enterprise/Yorktown Reprint) (GenCon)
R Late War Enterprise w/ Night Fighter SA (GenCon)
Thailand (GenCon)