OnePlus 2 might not be the only smartphone coming from OnePlus, since it is expected to present another smartphone for the mid-range towards the end of this year.
It should be known as OnePlus 2 Mini and be the compact version of OnePlus 2 It reproposed the design and all the physical details. Speech completely different to the technical characteristics, as they should be in general those of OnePlus One, display size separately.
So should not mount the USB Type-C, the fingerprint reader and all the other hardware components that will instead present the flagship OnePlus 2.
The price should be in line with that of OnePlus One, so it should be brought below 300 euro. As you have just read it is classified as a rumor, so do not take anything at face value; none of this comes from official sources.