THANKS MasterBuilder!!!! Got it!!!
Never was in this situation before so I just didn't know that you could find some game properties with a right clic in steam, THANKS again!

In the game properties, go to the "Betas" tab Thanks you very much for you answer...but, I must be completly dumb...but I don't see anywhere "Game Properties", nor in the Game nor in my Steam account :| Is this supposed to be in the game ? Because in the game, here is the things...

Hi Everybody there, I aplologies if my question was allready asked before, but despite my search on the forum I didn't find the answer : how do I get the 0.16 update??? => there's nothing for it on my steam account (unlike the previous update), I couln't find anything in the game interface to manage...