Next Limited Time Event (LTE) is the 20 Player Squad mode with 5 squads in total.
Obviously it's on the same lines as the 50v50 game mode but probably a little more co-ordinated. Tried a quick PC game on it and whilst the whole squad can be co-ordinated on the map, it's still quite clusterfucky with many other squad randoms usually ending up where your squad is.
This seems more of a fun mode for a few tries rather than a mode you would rinse and repeat each day.
Let us know how you get on with this mode.