I found this in the Sydney QVB store today. There were flyers at the counter. I assume that this is for all stores based on the previous half priced frappuccino deals that Starbucks have done, but of course I could be wrong. There was nothing to say that this was restricted to just this store on the flyer or promo poster.
"Come and join us Monday 3rd February to Sunday 9th February from 3pm - 5pm for a half price Frappuccino blended beverage made just the way you like it."
Enjoy!
Thanks op