Is it time to sell my iPhone?

[davester]

I have a 16gb iPhone, and given the current rumors (i.e. current iPhone model has been discontinued in UK) it seems to me that we'll have a new iPhone on our hands any day now (or at least by mid-June), with some or all of GPS, videochat, 3G, more memory, etc. likely. I'm loath to give mine up for even a day, but it seems to me that the time to unlock, jailbreak and ebay it is now so I'll have the cash for the new version. Ebay completed auctions are currently running around $600 and I'd guess that will plummet when the new one is announced. I have a spare RAZR that I can use in the meantime.

Any reason I should/shouldn't do this? Does anyone know if I can use my current SIM in my RAZR?