Most likely it's supposed to be a new 4" phone similar to the iPhone 5 with newer A8 processor and TouchID to please those who like the small format.
My sister has an iPhone 6, has had to have it repaired twice. I have the Samsung Galaxy S6, have had it for about 4 months, so far so good. I had to get a new phone since my original Samsung Galaxy phone stopped working. Would love to see what the S7 will be like. The Apple event is in March where supposedly they will introduce the new iPad Air 3