All three ship styles feature the Ablative Hazard Shielding console and the Emergency Weapon Cycle trait to be unlocked, with the former providing a last-ditch bit of durability and the latter offering a larger buff to Emergency Power to Weapons. Yes, you’ll need to grab all of them from the store again, either in a bundle with the three of them or individually. Still, if you loved your Tier 5 incarnation, you might want to consider picking one up.
Source: Tier 6 Battlecruiser Preview