I am not sure if games are getting delayed nowadays or if they keep announcing an impossible launch date every time upon initial reveal.
This time around it is Dead Island 2 that is getting delayed. Publisher Deep Silver has announced that the game will now be released some time in 2016. They posted on Twitter the reasoning behind the delay, keeping in line with the statement that it is the fruit of their ambition,
"We have always set ourselves a big goal for Dead Island 2: to create the sequel that takes Dead Island to the next level. A game that takes what our fans tell us they love about Dead Island--multiple different characters to play with, co-op, and turning a paradise setting into a zombie slaughter melee--and a game that adds a ton more content and combat options on top of that."