Huawei is now planning to launch four new devices to their flagship family P9. According to the source Huawei will launch regular P9, a more budget-friendly P9lite, and a P9max (whose predecessor, the P8max, was allegedly never considered a true P8 offshoot, internally). The fourth one is a variant will be a feature-enhanced P9. According to news they will give slightly larger screen (nothing in the PXmax range, however) and additional RAM and storage. The fourth variant is said to be highlighted by its improved camera: a dual lens, dual (12 megapixel) sensor configuration. So it will be a dual camera variant.
Source : Venturebeat