From 1C forum
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We have the official announce complete with screenshots planned for next week, but i can give you some info now
This new title in the series will focus on the Teutonic Order in the 13th century, namely conquering the pagan Prussia. The player will act as a Komtur of the Teutonic Order and face historically accurate problems like low manpower of the Order and strong resistance of the heathens.
The biggest improvement IMO is the strategic mode played in real-time with RPG elements thrown in, first time in the series! You'll be able to train troops, send them across the map to conquer new territories, castles and settlements, etc. - the usual 'grand strategy' stuff.
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A demo playable was prepared for Gamescom but 1C at the end don't display the game here, so at the end is possible the demo will be released to final users. I think the game is in beta status, so is possible for winter will be ready, but the end the release date depend from the commercial guys of 1C.