The Samsung SM-E500F might be the pioneer of a new smartphone lineup

Fortunately, the giant is perfectly aware that something needs to be done and the reported restructuring at the top of the company indicates that Sammy wants to "cure" itself from the bad luck. We also heard that the company's portfolio for the next year will consist of significantly less models than its 2014 one, for example, which will help the potential customers discern the company's different phones more easily.
There is no additional info about this device, but SamMobile speculates that the SM-E500F could end up being a Samsung device that employs a single-letter naming scheme, similar to the purported names of the Samsung Galaxy A3, A5 and A7.
source: Zauba via SamMobile