Well 2012 version was released 26th April last year. So perhaps about then. But we would have seen or head something by now. At least a screenshot. And it's last installments has an average rating of 2 stars, so they may not see the potential audience.
If something online is free, you are not the customer - you are the product.
I did a quick search and found nothing except people complaining about Tiger at the Masters. I don't know if EA could bring all the new swing mechanics into the iOS, not that they would need to.
IMO if they can't bring something new to the game this year (like Augusta maybe?) than they may as well not bother.
On a side note, I was always a Tiger fan, but I'd like to see someone else represented now. Tiger is still a draw at the golf course for spectators, but I think it's more of a curiosity at this point. His game just isn't there, his on-the air-personality is completely boring and always has been. Someone else deserves it, but I guess the name TW still sells product. Congrats EA for sticking with him in this time of trouble/milking him for all you can until public opinion of him gets too low.