Really sucks for whoever shelled out $700 for the final splash page of original art. Good for Cory Smith, though.
I completely disagree, no matter what happens in future issues he DIED in this issue. It was confirmed by the character Angel Bridge in the dialogue, not to mention every single news outlet that has printed a story about the events. Turtles die in real life when their shells are compromised, and that's exactly what Bebop and Rocksteady did to Donny. Will a serum/mutagen/ooze bring him back?..... probably.
Wolverine will be back, but that doesn't mean he didn't die in Death of Wolverine 4
This will be an iconic panel forever in my opinion. $700 was a steal.
Except in the preview art for the future issue posted by Adonis the dialogue reads "he very nearly lost his life"
It would appear that you have some amount of money tied up into this and are desperately clinging to the idea that he is dead.
Your assumption is incorrect ......