We're onto the end of the space arc! And we're finally going to see Master Splinter alive again (including the Mighty Mutanimals, Karai, etc.) and the Turtles, April and Casey defeating Shredder and the Foot Clan. If you have a theory write it here.
The Turtles will finally get to destroy the black hole generator in The Ever-Burning Fire.
The Turtles will finally go home to Earth to see Master Splinter (including Karai, The Mighty Mutanimals, etc.) alive once and for all in Earth's Last Stand.