From the World of Design Trends: “Flat Design” Is Dying
factionmedia.com
factionmedia.com
Well, of course movements change, so you could write an article as soon as a trend starts that its "dying."
More importantly, human-computer interactions is a relatively new area of design. How do we know that flat design will actually be just a fad rather than a paradigm shift?
While flat design was definitely done "right" by some (e.g. Windows Phone) it was done very wrong indeed by others (iOS 7, Google Maps, Windows 8, et al). So wrong in fact that I'd go as far as to call it a usability anti-pattern.
There's a reason why shadows and borders exist: To distinguish items from one another on a 2D display. Without those clues it is hard to distinguish a text label from a clickable button.
Perfect example:
https://i.imgur.com/Auyj1Xs.jpg
So if you had never used Windows 8 before, you might not know that "Change PC Settings" is a button instead of the title of the section, and in my experience that is typical for most users.
Probably not a great example: We have had half of a generation grow up with the web, and to my eyes, any isolated string of text affords clicking.
Much of the new popular UI designs is still pretty flat too: https://dribbble.com/