Hmm, the first one has a Scalaron Flux Core, meaning it's likely to have some ability related to it. It's also considerably bulkier than a Desdinova, and very squat, so it'd be moderately surprising if it's a fast attack ship, taking in note that I think I have spotted some manoeuvring thrusters.
The 2nd one is far more built to take damage it seems, from the looks of it. In fact, thinking about it now, this looks like a new Cruiser/Capital developed for defensive roles or to bolster fleets. The other thing to note are the lack of carrier ports, meaning these are dedicated combat ships.