The new Terminator movie is a reboot. It will be in theaters sometime in 2015. They are planning a whole Trilogy of new Terminator movies. There is no current word if Arnold will be in this Trilogy or not.
3D? Will Terminator 5 be in 3D? The new Terminator movie has James Cameron behind it as the writer which almost guarantees it will be in 3D. Rumor has it Cameron is relaunching the Terminator franchise with new character development and Avatar technology, so they can reboot the franchise.