I'm sorry, but that is not accurate.
If you are a Premier member, you can upgrade after 1 year instead of waiting the standard 2. However, Sprint will only budget upwards to 2 weeks, off your eligibility date.
I fall under this category, with my next upgrade due on August 1st. At most, they could only bump it 2 weeks. I attempted numerous customer service reps, including several tries with Retentions, and all came back with the same answer.
Since I was stuck buying full price, I spent the same amount of $$$ on a Google IO phone instead, and got it several weeks prior to everyone else. And I couldn't be happier.