Phil Schiller just announced the iPhone 4S, without going into detail about how fast it'll fun on your network or whether its 4G or not. It doesn't matter, and he knows it.
In his own words, Schiller said as much:
Now where have I heard that before you might be thinking? This is what our competitors call 4G. We're not going to debate it
And really he's right. 4G is just a term for how fast phone A runs on network B. It's why people got into such a tizzy with the admittedly crazy rumour popped up that the 4S will pop up on WiMAX. LTE, HSPA+, blah blah blah. In the end, the 4S will double your upload and download speed. That's all you need to know, and that's good news. [Gizmodo Liveblog]