Here's what I see happening with Apple, Intel and TSMC.
Apple will fab their ARM chips for the Iphone 5 and Iphone 4 at TSMC's 28nm.
Apple will use Intel Atom 22nm chips for their new Iphones.
The Iphone 5 and Iphone 4's will be the low end, yesterdays product (Free with 2 yr contract). Apple still has to sell these, as they can't just stop selling ARM products the next day.
The New Iphones and Ipads will have Intel chips and will be the high end Phones and Ipads.
So Digitimes may be RIGHT in a way with Apples production split between Intel and TSMC.
Apple may also not dump Samsung immediately, but will Phase them out over a year or so.