What does eligible for an upgrade mean?

Got a new phone with verizon in the beginning of october...and they are saying o my myverizon app that i am eligible for an upgrade on 6/2013, which is 4 months earlier... Does this mean i can get a bew phone then instead of waiting until oct? Thanks!!!|||you need to be careful w/wireless phone companies. contact them %26amp; ask them what, specifically, this means. might cost you a lot more money than you would expect. upgrade: trade up (that's never free)