I don't believe this is true but maybe one of the owners will chime in.
All the pictures I have seen of the interior still have the auto 4x4 button. Maybe this removed on the v6? The V8 laramie I test drove the other day had it so I dont know why it would be removed from the rebel. Looking for pics of the interior I do now see some that only have 2wd and 4hi/lo but there are more with auto 4.
https://youtu.be/GTr_3acTrB8?t=3m2s
http://www.ramrebel.org/attachments/2015-ram-1500-rebel-interior-view-jpg.1/
http://image.motortrend.com/f/85776986/2015-Ram-1500-Rebel-interior-02.jpg
Looks like it is missing in this one from the chicago auto show though,
Ram 1500 Rebel 360 Spin | 2015 Chicago Auto Show 360 Spins | 360 Revo | A Marketing Company with 360 Vision
All the pictures I have seen of the interior still have the auto 4x4 button. Maybe this removed on the v6? The V8 laramie I test drove the other day had it so I dont know why it would be removed from the rebel. Looking for pics of the interior I do now see some that only have 2wd and 4hi/lo but there are more with auto 4.
https://youtu.be/GTr_3acTrB8?t=3m2s
http://www.ramrebel.org/attachments/2015-ram-1500-rebel-interior-view-jpg.1/
http://image.motortrend.com/f/85776986/2015-Ram-1500-Rebel-interior-02.jpg
Looks like it is missing in this one from the chicago auto show though,
Ram 1500 Rebel 360 Spin | 2015 Chicago Auto Show 360 Spins | 360 Revo | A Marketing Company with 360 Vision