Ghostbusters Key Lime Slime Twinkies by Hostess was released in June as a promotion of Ghostbusters (2016 Movie).
First images of the item appeared on February 20th 2016 on Dinosaur Dracula Facebook feed, which he noted came from ENM Sales & Services.
On June 26, 2016, Hostess Snacks' posted a promotion for its Key Lime Slime Twinkies which also included promotion for the movie. 
- On page 20 of Ghostbusters International #7, the Twinkie makes a non-canon cameo on the ground.
- Dinosaur Dracula Facebook "Photo of Ghostbusters Key Lime Slime Twinkies (He revealed the first image of the item.)
One image from Dinosaur Dracula on Facebook.