Check your emails. I just got an offer for card holders to get the orig special financing deal on purchases from 3/1-4/30/16. I've been toying with upgrading my phone anyway and thought I missed the boat the first time around. Fingers crossed I can get an increase too.
I called in after my initial special financing offer ended and told them I wanted to buy a new iMac and could they extend the original offer. Barclay said NO PROBLEM, asked me when I wanted to get the computer and gave me a 2 week window to buy it in. Went the next day and picked it up and got the promo financing, Its why I will keep my Apple card.
