Warhawk update 1.4 is now live to download.
1.4 introduces 2 new gameplay modes FREE for every map inc booster maps.
Full details of the update can be found at the official Playstation blog.
Next to come is 1.5 which will bring trophies to Warhawk and a few more bits. Dylan replied to a comment on the official Playstation blog about the release date of 1.5 saying:
seriously…soon. That’s all I can say
So lets hope soon means this week sometime?????