Hello.
Thanks for taking the time to pose your question. :)
Starbucks has long prided itself on being one of the premiere coffee roasters and grinders in the US and perhaps the world. That's why--to this point--they only offer percolated coffees in the US rather than an instant sort.
Some time ago someone wrote a parody announcement claiming they were introducing instant coffee (http://www.unconfirmedsources.com/?itemid=2409 ), but this is surely not the case.
You'll note that throughout this answer I've used "in the US" a number of times. That's because Starbucks -has- released a ready-to-drink type of coffee in South Korea. (Details here:
http://www.starbucks.com/aboutus/pressdesc.asp?id=773 )
Also, if you're interested in requesting that Starbucks does begins to introduce these to the US, you can contact them at
http://www.starbucks.com/customer/contact_forms.asp?nav=3fBe well -- and enjoy a drink!
Cheers,
sm
