Verizon subscribers, we hope your device habits don't revolve too closely around that 20-month upgrade cycle: it's about to get longer. Big Red has confirmed that upgrade eligibility will now start only after the two-year contract is up. Those who have an existing contract that expires in January 2014 or later will have to wait four more months before they can get hardware at a discounted rate. Ostensibly, the shift is to let customers count on a lone upgrade date for all of their connected
