[citation][nom]jaragon13[/nom]It's microsoft,they don't really care about one customers "old product" this is a "new and improved product" that you should be begging to pay for.[/citation]
A tad harsh there, all console makers make constant revisions to their product line as it progresses. Microsoft's changes just happen to be publicly displayed.
The PS2 DVD-Rom was revamped about 4 times over the course of its life cycle due to abysmal read speeds and reliability problems the earlier models had. Nintendo altered its GC numerous times, including actually removing functionality (they stripped out the Component video capability) when they noticed many people weren't using it.
This is all part of the process to make the products more reliable, and cheaper to product.