Not really a spoiler but some people are hyper sensitive about this stuff so I labeled it spoiler.
In the new novel Life Debt we are introduced to the first starship produced specifically for the New republic in Canon.
The Star Hawk class.
I am currently on chapter 34 of the book and all I know for sure so far is:
1. First ship designed and built exclusively by the new republic.
2. The materials for the ship came mostly from salvaged imperial ships.
3. The front of the ship is described as the "hatchet end"
4. 1 Star Hawk and an "Alderaan cruiser" (Corellian Corvette) can easily defeat a single (undermanned) Star Destroyer.
Based on what we know of the Canon Novels so far I suspect this ship was put in because we might see it in Episode 8. All though I do not expect to see new trilogy ships in Armada some time this may open some interesting possibilities.