Slightly off topic but follow me on this thought if you will or can.
OK this is concerning when Mango gets released and how it almost has to go by my twisted thinking.....
Currently, the OEM's are running beta Mango on their devices, the day that MS puts the "Grown in Redmond" sticker on Mango (RTM), the OEM's can then start making devices. That's pretty much a given. The key comes from the carriers, they get approval of updates because they have to support it. They get to start testing Mango at RTM also and as far as we end users are concerned, we need to keep an eye and watch on them.
Now, that being said, here is why I think that the carriers are going to probably be VERY prompt getting Mango approved.
They know that it is coming, the press knows that it's coming and soon, the general public is going to know that it's coming. Along with some sweet or very tempting hardware. They are going to want to get that nice hardware, and they can't very well say, we will accept it with these new devices, but not these older ones (unless there is a definite reason ie: a firmware issue). Customers may bide their time for Cut and paste, but for Mango, they (we) wont be so patient after MS puts it out there.