It would be silly for EA to do away with this program all together.
My guess is that we'll see Team Diamonds in the week between Most Feared Release 3 and Harvest Release 1.
Last year it was Most Feared Release 3, All Madden, and then Harvest Release 1. Since there is no All Madden this year, it would make sense for EA to drop Team Diamonds in between MF and Harvest. So either the 1st or 2nd of November.
I wouldn't be surprised if Team Diamonds were the first 91 OVRs of the year.