Puerto Vallarta chalk picture event in Sept or so...

Over the past couple of years I have caught sight of this event in PV which is usually in Sept or October.  I always see it AFTER it has happened.  It is chalk pictures on concrete which are 3D.  There are usually some very famous artists at the event.  I recall that it is an internatinal festival type of event. Anyone know when and where this might be.

Google "Festival de gis Puerto Vallarta" and you'll see all kinds of links. Looks like it's generally held in January (much better), and is combined with a couple other festivals, gastronomy and music. Sounds fun.

I did do some Googling around but didn't find a 2014 date, but the PV Facebook page is marvelous and now I am jealous about all the things to do and places to go over there.