From publisher blurb:
Sometimes the most wonderful and terrible things come in small packages. Nanotech will help humanity conquer the stars but it has a dark side. If misused the same nanites that delivered humanity to the stars could end their civilization. This accessory contains new material covering:
20+ Nanoaugmentors (new additions to the Augmentations presented in the Strafinder Core Rulebook)
30 Nanoviruses (temporary augmentations)
3 New types of nano-armor
16 Nano-weapons
Explore independent nanocolonies (including Gray Goo, Holographic Servant, and Zombie Dust, as seen on cover)
Take advantage of holistic nanomedicine (including healing chambers, resurrection chambers, and mnemonic transfer devices)
9 new feats
Creature Update: Nanoswarm (CR 1 -25), also includes the horror, replicator, and terraformer templates