Is Immaculate Conception a traditional Catholic Church that celebrates the Mass in Latin or Novus Ordo/New Mass?

Greg is correct; a Latin Rite Liturgy is celebrated every sunday (12noon) and Holy Day of Obligation (8am) in the Cathedral Chapel. The 4 stational masses provided by the cluster clergy are Novus Ordo (4pm vigil, 8am, 10am, 5pm).

I love the Latin rite Liturgy.

There is a latin mass every Sunday in the Chapel on the side of the larger cathedral. Noon.