We found 6 Reddit comments about Batman/Teenage Mutant Ninja Turtles Vol. 1. Here are the top ones, ranked by their Reddit score.
Hard cover comes out in August
Batman Adventures, Batman/TMNT and Lil Gotham
Amazon has all six in one collection available for pre order
Nothing showing on previewsworld.com for the future and I could not find anything stating that they would. If this issue 1 sells enough, I'm sure they would consider a trade that is packed with all the extras at the least. Edit, a hardcover was released last month, I can't verify that stuff in this is not included in that, but I'm guessing it is all different stuff sadly.
I know it's not ghostbusters related but if you enjoyed the ghostbusters and TMNT team up, check out the Batman and Teenage Mutant Ninja Turtles team up!
The TMNT/Batman hardcover comes out August 23rd but you'll be able to get it a week or so earlier at a local comic shop