...Other than suggesting that they will not take a subscription based approach.
This still does not satisfy those who are concerned with the initial pricing of the software and maps, the pricing of the hardware and the pricing of map updates, all of which can end up being substantially expensive over a period of time of use.
Given the size of the initial app/map download (~1 Gb), you had better have an unlimited data plan or a good WiFi connection.
http://www.macworld.com/article/141539/2009/07/tomtomiphoneupdate.html
Over a two year time period (a reasonable device life) the subscription for AT&T's app would be around $240 U.S. and that includes map updates and traffic. That is competitive with the purchase price for a lot of the stand alone GPS units that have lifetime traffic included.
It will be interesting too see where TomTom's pricing comes to and whether it includes things like traffic, or will that be another paid for extra. Traffic is not mentioned at all in the above article.
I know a lot of folks don't like subscription models, but one has to compare pricing over time to be fair. One way or another, you are going to pay somebody a fair amount of money. All of them (AT&T, TomTom, Garmin, etc.) are in business to provide products and services at a fair profit.
How will TomTom's pricing compare and what if any other functional differences will be there that might outweigh any pricing advantage of one application over the other.