The phrase "new faction" refers to a group or organization that has recently formed or emerged. It means that there is a fresh group of people working together towards a common goal or belief. Full definition
The faction hub will be updated regularly with new faction information. (blogs.sega.com)
This new expansion introduces three brand new factions that are highly associated with particular in - game classes in the form of 132 additional cards. (popgeeks.net)
Multiplayer will be supported with regular releases of new maps, units, and even whole new factions. (kickstarter.com)