On a Facebook post from December 15, 2011, the game developer GoBit Games originally stated that the release of "Burger Shop 3" was going to be delayed. The company apologized for the disappointing update, but it claimed that the game was in development and would include old characters from the series and a bunch of fresh features like new food, restaurants, customers, and more. 
Go Bit Games wrote another Facebook post on October 17, 2014 stating that the release of "Burger Shop 3" was still delayed.  In the post, the company stated that after it finished a game nicknamed "Code Name Deflector," it would do what it could to finish up "Burger Shop 3."
As of October 11, 2015, there have been no further details on the state of "Burger Shop 3" by the company since that 2014 Facebook post. Due to the lack of updates, it is still unknown whether or not the game is ever going to be released.