Does The Battlesmith/ Bladesinger Multiclass stack Intelligence Now?

I'm planning to multiclass into Bladesinger wizard after 5 levels of Battlesmith Artificer and after seeing the new changes I'm curious if your Intelligence mod is added twice to damage and attack rolls. I know ability modifiers aren't usually stacked, but I don't see anything saying you can't. Battle ready and Bladework seem to be two completely different abilities even though they do the same thing. I also feel like its just a lot of damage and possibly broken so I'm curious about everyone's opinions before talking to my DM about it. 

Bladework and Battle ready do they stack? What do you think?

Thank you for the clarification! That makes a lot more sense.