I just drove the new stretch, the freeway is complete and all exits/entrances are open in both directions.
MN56 was signed at the exit along US14, however there are no longer any US14 Business signs or shields in the area. Both on and off the freeway I could find no indicators that US14 Business has a western endpoint at US14. However, when I drove up MN56, I did see a sign for US14 Business where it leaves MN56 and heads into Dodge Center. It appears as though, in terms of signage at least, US14 Business only runs between MN56 and US14 east of town.
Sadly, I could not get any pictures as it was dark out and I was already in a rush to get home.