Well, that was a delay, wasn’t it? According to the news page, the reason for releasing the ship today in particular is to commemorate the liberation of Marseilles and Toulon, in 1944. Better late than never, I suppose.
The bundles and stuff are more or less the same as NA, including the commemorative flag available in the largest one. Personally, I find the Dunkerque pretty fun despite her flaws; with luck, the devs will improve her a little bit – her maneuverability and turret HP, mainly – but we’ll just have to see.