Within the default setting the guildlaws make cybernetic enhancements illegal, and so they are not commonly found. The Cybercops guild has particular responsibility for enforcing those laws, and system lords and criminal syndicates have often turned to illegal cybernetics to obtain an edge.
In the appendix there are cybernetics rules which essentially allow improvements to Physique beyond the normal human maximum as well as integration of equipment and weaponry into the body for a price. The downside is that as more cybernetic enhancements are added the chance of a psychotic break occurring under stress becomes more likely. There are also rules in the appendix for extreme drug enhancements to increase Physique, Intellect or Passion on a temporary basis.
The stretch goal for the first supplement will include much more detailed rules for cybernetics and psionics, including the guilds who hunt them, the organisations who are making them, NPCs using them and a short series of linked adventures related to them.