The rumor originated from EA DICE customer support, placing it on slightly dodgy ground.
However, it seems the rumor has now been confirmed. This is according to a private message exchange that happened between a forum user and developer Guillaume Mroz.
Check out a screenshot, here.
According to Mroz, there are plenty of technical challenges for the team when bringing offline multiplayer to life in Star Wars Battlefront. However, EA DICE are aware of the huge demand for it from the player base, and even promised some DLC news soon.
As always, take this with a pinch of salt until official confirmation from either EA or DICE.