A PlayStation Plus subscription may be required for online multiplayer on the PS4, but it won't required when the console gets DC Universe Online and Planetside 2, both of which are free to play. DCUO's PS4 version will also be cross compatible with the PC title.
Some wild quantum powers, including the ability to "blink" or teleport out of harm's way, arrive today with Origin Crisis, the seventh DLC extension for DC Universe Online. Operations, raids and time travels explore such possibilities as evil Batman and good Luthor. This post explains how it all fits together.