According to this leaked image from a Boost dealer site that a tipster sent me, Boost Mobile is getting a new phone soon to replace the well regarded ZTE Warp Elite. It's the ZTE Warp 7 and it looks like a good deal for $99.99 . According to the screenshot, the Warp 7 has a 5.5 inch HD screen, Android Marshmallow 6.0, 16 GB of internal memory, 2 GB of RAM an unnamed 1.2 GHz quad-core processor, 13 MP rear and 5 MP front cameras and a 3080 mAh battery.
Phonearena.com has some additional unofficial specs including that the battery is removable (the Warp Elite's is not), screen resolution is 720 x 1280 px and that there's support for microSD cards up to 32 GB.
The Warp 7 looks like to me like a CDMA version of Cricket's ZTE Grand X 3 with the same screen size and resolution and same battery and processor specs. The only obvious differences between the two are that the Warp 7 has higher resolution cameras, 2 and 5 MP vs 8 and 2 MP and a newer Android version, 6.0 vs 5.