Yes they're indeed going back to plastic backed.
Here's a comment I copied and pasted from walmart.com's website review page that an employee of depends posted.
After reviewing the feedback we've gotten, we're re-introducing the original style of briefs we made in the past. These original briefs will feature 6 adhesive tabs, plastic outer cover, and original waistband. By April or May 2017, you should expect to see our original version of Depend Briefs in stores and at most major online retailers. Thanks again for being a fan and for taking the time to provide us with feedback.
https://www.walmart.com/reviews/product/893193