Looks like the Packers have redesigned their no-contact practice jerseys:
Product Description: Replica Quarterback practice jersey has ribbing at the neck with miter 'V' construction and NFL Equipment logo, G logo on sleeves, satin neck taping, double needle construction, dazzle fabric side panels and sleeves, extended drop tail and side vents. Jock tag and Reebok logos finish the piece.
Unless perhaps the replicas are being spun off from the authentics into fashion jersey territory?
Contrast the above picture with this one, from last month's minicamp:
UPDATE 08/02: False alarm, it's just a fashion thing. These pictures from minicamp clearly show the quarterbacks wearing the standard-cut red no-contact jerseys. The NFL shop is selling the exact same fashion jersey for all teams: