The "complimentary annual" language has been there for like 8 years now. Every year, someone assures us this can only mean the termination of the program absolutely "imminent" and there can be no other possible explanation. And every year the predictions turn out to be false. All you need to do is look at the recent UA MM class action lawsuit over the use of the term "lifetime" after they changed the benefits to get an idea of what the DL lawyers were likely concerned about when they changed the language. Sure, it may say "Offers and benefits subject to change without notice" in the T&C's. But if you use the term "lifetime" it's not unreasonable to assume those only apply to new MM's, and not existing ones.