@jkp already gave you the best answer, but just to clarify some Terminology to help your further research.
Edge is only one part of the new architecture, and edge drivers are only substitutes for the old device type handlers.
Trendsetter was a smartapp. There are still smart apps in the new architecture, but you have to host them yourself, the process for integration is different, and any old smartapps have to be rewritten to use the new architecture. Or, hopefully, you can find equivalent functionality with one of the alternatives that @jkp mentioned.
The following thread has some more details about that: