From: St.Petersburg, Russia
I've uploaded everything on the site. For those who already started games in the previous version of 4.0 - you probably things should be able to update your existing games, but I still advise to make a reserve save before doing it. Updating wpa.dat and wpc.dat (aircraft and classes of ships) is least likely to cause bugs, wps.dat and wpl.dat (ships and locations) might potentially be problematic.
You also, won't miss the key changes, namely increased China garrizon requirements, and bringing the mod to DaBabes standard, even in case of inability to update. You'll miss more rational upgrades on Japanese DDs and CAs, plus the ability to upgrade the Nick line into nightfighters. The latter is not quite as important anymore, because the latest beta, as far as I can see, had reduced the potency of nightbombing very considerably.