What looks like a teaser trailer for 'Year of the Snake' DLC for Sleeping Dogs emerged online, along with a list of trophies. The trailer, which its poster says was plucked from the game's directory, doesn't show much that couldn't be ascertained from the name, but the trophy list does offer a bit more info.
The Chinese crime cabaret involves a bomb squad you'll presumably join, and a bunch of cultists you'll definitely take down. There are also Evidence Collectibles to collect and give pride of place to in your Evidence Collection.
When approached about the DLC, a Square Enix representative told us, "No comment."