Samsung has just posted a set of videos on YouTube promoting this year's Galaxy A-series under the tagline "A for you" (A4U, millennials?). From the A3 (2016) to the A9 (2016) they all share the same glass/metal build, and that's the first thing the PR team has highlighted.
Almost the entire range has the same camera too - they all rock the 13MP f/1.9 unit with OIS, save for the A3, which has been denied stabilization. That won't stop you from photographing kittens, though.
And they all have the fingerprint sensor in their home buttons, allowing them to support Samsung Pay - until recently reserved for the flagships only