Hey there MacRumors! I was just interested to know whether it will be possible to upgrade from the GM release of iOS7 to the actual public version? Basically I'm asking this because my iPhone is not on a contract, and as such I have been wanting to change my network. However because I have been on a Beta, inserting a different SIM card basically makes the phone unusable (and unfortunately no I'm not a registered developer, apologies to those that this offends). So long story short, will I be able to switch my network/carrier on GM or will I have to find a way to get off the betas and download the public release?