Following a preemptive leak of the Asus ZenFone 4 Max last week, it appears the Taiwanese electronics firm has let slip two more devices in the ZenFone 4 family.The phones, the Asus ZenFone 4 and the photo-focused Asus ZenFone Selfie, were revealed via Asus' French page, though it appears the yet-unannounced devices were shown off ahead of schedule.As...