How are the new, as of Retribution 1.1, ancillary armor repairer blueprints seeded?
Exactly the same as the Ancillary Shield Booster Blueprints are. From CCP Fozzie's DevBlog:
i.e. spawn as BPCs in exploration sites around k-space. BPCs will vary from 3 to 50 runs and will also drop from officer and commander spawns.