Just as soon as ever I can get my hands on one. And my 1520 is my favorite phone, ever, so I'm not motivated by dissatisfaction with what I have, I've kept an eye out on the latest models of the other manufacturers. I've also had recent occasion to set up the latest Samsung, a Blackberry Passport and a Classic, and an IPhone 6 Plus just last week. I also have my own BB Passport. Nothing I've seen on any of the other platforms has caused the slightest envy in me, or tiring of my 1520. But I am all-in-with-both-feet on Windows 10, and I really want to have the full capabilities across the platforms as soon as its available. There will be certain things that you will be able to do with the new flagship specs on board, that you won't be able to do with your 1520 even after you've upgraded it to Windows Mobile 10. Sure, it won't matter to everyone, just how fully-featured your ability to project your screen or to remote control another Windows 10 device through your phone, but I want to and also won't mind an overall upgrade of specs. I had an ATT 32 gig 1520 originally, but when the screen cracked, they only had 16 gig models left. I was on the verge of buying a 32 gig version from a third party when the rumors of a flagship began to solidify. So I am now on the clock and waiting. I thought the rumored specs were for a slightly smaller screen. Not too much smaller though. I hope.