There have been talks the OnePlus 3 could get a premium version with slightly upgraded specs and it will be called OnePlus 3T. These upgraded specs wont be free.
The OnePlus 3T could be priced slightly higher at about $479. The current OP3 is selling of $399. Famous leakster, @evleaks (Evan Blass) has revealed that 3T variant will be priced $80 higher than its current selling cousin.
If the leak pans out to be true than this could very well be the highest priced OnePlus smartphone. As per the rumors the, OP 3T is expected to have have Snapdragon 821 SoC with Adreno 530 GPU, 6GB or 8GB RAM, a QuadHD display and run on Android 7.0 Nougat OS out of the box. It is also expected to have improved battery life.
We have yet to get our hands on exact release dates or its official specs. Stay tuned for further updates on the matter.