Plus, if we ever see a new phone TES Travels game, I think it's most likely it will be released for the iPhone, but that's just me speculating.
You're probably right, but as an owner of a T-Mobile G1, I'm kind of hoping they'll do an Android port. iPhone got popular before the Android platform, but recent sales data indicates that Android phones, in aggregate, are now outselling iPhones. It may very well happen that a year from now, there are a lot more Android phones than iPhones. Plus, Android supports a Java-like platform which allows developers to create a 'portable binary' which will run on any Android phone. The flip side of that is that the iPhone uses basically the same family of CPUs on all iPhone models (they are machine-language compatible), so you can create a native binary for an iPhone (which probably gives some performance benefits over a Virtual-Machine system) which will work on all iPhones (but no other phones).
Anyhow, I won't be too heartbroken to not see any TES mobile games any time soon - I'd rather see TES V for PC/XBox/whatever, but if they *can* do a new mobile game in addition to everything else they're working on, that'd be great too.