The Far Lands are still in Minecraft. At the Coordinates +/- 30.000.000 (30 Million) X/Z, you will find the Edge of the Far Lands. They are generated as an Ocean with dirt-only ground. You can also see trough the water and you can fly trough the ground. Far before the Far Lands, the Void partiles don't behave right. Also, no mobs are spawning.