As you might have spotted there is a coloured bar under each game now.
There is a feature called away time which allows a player to buy 12 hours extra time for 10 credits, It's a handy feature when you need to go away on vacation or just don't have time to make your turn in time. Previously the only limit in how much you can use this feature is that there is a auto turn off after 14 days, but you could just turn it back on again so with enough credits you could keep a game running forever without doing you turn.
It's quite boring to play against someone who does that, in particular if you have invested much time in that game and it's going your way. This new limit to the away feature is in place to prevent that.
In every new game you start with 20 aways, 1 away is 12 hours extra time. Every 5 days you get 1 more away even when you have away turned on and is using it. This gives you 11 days if you start a new game and decide to not make your turn at all. These numbers may be tweaked a bit in the future but this is the starting point.
You can max accumulate 35 aways.
The current limit of 14 days before the away time is turned off is removed so you can play with away time activated all the time but if you use up all your aways in a game your turn time will not be extended and you will miss the turn.
In addition to the bar you can see the exact number of aways by hovering the cursor above a shield.
A new option is also being implemented which allow you to receive a warning email when you only have 3 and 1 aways left.
There is some information about this feature in the wiki: http://www.warbarons.com/wiki/interface