Bingo. This was the feature I was looking for. If I'm keeping a phone for 2 years, I want it to be ready for all of those years.
Now, it is unlikely I will go for this model next year. I'll ether keep my 3G, go for a 4G Android phone, or wait until next June to see when the 4G iPhone is out.
To me it seems Apple is pulling the same game it did with the original iPhone. We all thought it should have been on the new 3G technology. But it was Edge only. Low and behold one year later, the 3G model is out, and millions of gullible Apple fanatics open their wallets for Steve Jobs again. I won't be one of them.