I just received the e-mail stating this today.
From the e-mail:
Your 2017 season ticket invoice is now available online and for those of you who continue to receive your invoice by mail, you will receive your printed copy in the near future.
Please note the changes to the season ticket invoice regarding the pricing of your tickets. For most of you, this is the first overall increase to your season ticket pricing since we moved into MetLife Stadium in 2010. The average increase for 2017 is 4%. You will receive more details regarding your 2017 season tickets shortly.