They will replace it with a 920 since they ran out of 900's. My cousin just sent her's back and received a 920.
Asurion is the handset insurance provider for AT&T, and I think they are for Verizon as well. I have never recieved a new handset, and in our dozen years of cell phone usage we have done an insurance exchange three times. When we agree to the terms for the exchange, they even state it will be a refurbished handset and record your response.
On the up side, doing it through insurance gives you a 12 month warrenty. If you need to turn in your 900 and get a 920 that messes up in three months, they will exchange it. I sure didn't get that when paying out of pocket for replacement devices.
It's not the Insurance it's if it's still under warranty(At&t reps still sold the L900 even when the L920 was months old). She just told me that the woman was trying to push her to a SG3 but she wanted to stay with Windows so she got a L920