Hustle Kings is a pretty awesome pool game, i like playing pool in real life however gamewise i think i prefer snooker and the devs of Hustle Kings are bringing that to the game via a snooker pack on 2nd June. The pack comes with a new environment, new music, snooker offline tournament and a snooker6 mode which has all the snooker rules but faster with just 6 reds.

Considering its a pack i am guessing it wont be free.

Also Hustle Kings was updated with a patch yesterday:

• Improved Breaking : the pack has now been adjusted so that instead
  of the rack being perfectly spaced every time, a very slight variance
  has been introduced between the balls which causes almost every break to
  be different
  
• You can now replay the shots that are played in attract mode
  
• Even more stats during loading screens
  
• Game options can be modified in online rooms
  
• Watch other people’s matches in the all new Spectator Mode!
  
• Plus a new loading icon, viewing player’s profiles during an online
  match and more
  

The snooker pack won't be free
$2.99 on us psn

so shouldn't be any more than a couple of quid here