All current saves remain compatible with the new system, you have nothing to worry about, you can just keep playing, everything is automatically converted, as always :)

ADDED

• -15% damage penalty during bad weather (for all units), except for planes if the All Weather Policy is enabled.
• Weather forecast system.
• Possibility to edit the weather table of any scenario using the map editor (forecast accuracy, accuracy loss, how many turns in the future, and percentage of bad weather for every month).

CHANGED

• Multiplayer compatibility -> 7.5.0.
• Reworked the weather system from the ground up. The new system now makes more sense, and is more accurate as a whole. The percentage of bad weather is now applied to the whole month, and no longer to every single turn. It also scales to the speed at which days go by.
• Confirmation windows now have a black background and will prevent any interaction until the choice has been made.
• AI order of playing its units changed a little, now, on top of being played in the order it currently is played, it will also be playing its wounded units first. This should have for effect to unclutter the front with wounded units, and to have fresh troops going to the front right away instead of having fresh troops behind waiting for nothing by playing before the wounded ones first. Hope that made sense :)
• Another AI movement/positioning change, it will now move weak units right after they play, instead of waiting a full 1/2 turn. This will free space for stronger units as well, instead of them staying behind and waiting for their turn. Basically, AI is doing something close to swapping now.

FIXED

• One instance of AI unit stacking (due to destroyed bridges).
• Another instance of AI unit stacking (due to overrun setting + Fast AI setting).
• In some cases, tile data could not be updated when snow fell/melted.