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From the update:
This is it boys and girls; the Big One!
1A Games is pleased to announce what we feel is our best stretch goal yet:
This final stretch goal would allow us to produce (earlier than we had originally hoped) a new Map Pack expansion; this time with all new maps! It will feature 9 brand new double-sided map boards and 3 sheets of punch out terrain overlays and the art will match the style of the current maps from Normandy onwards.
Go and read the description for full details on what will be featured on the maps!