I was answering another thread and I thought about this... I'm hoping they'll mention it in Data Trails, but until then it'd be cool to discuss, especially for anyone who plays a technomancer who's been Emerged for more than a year or two.
So, in 4th edition with the advent of the Wireless Matrix, technomancers started to appear. Similar abilities to the Otaku of yesteryear, but without requiring any augmentations, blah blah blah. Everyone knows how TMs are, they're "organic commlinks" or what-have-you, able to interact with the matrix totally on their own. Their brains just learn matrix protocols. They learned programs and called them complex forms, they could simulate skillsoft in their own bodies, and be a walking PAN with an untouchable master node.
But that changed entirely in 5th edition. The thing is, though... It's not like mechanical changes like going from "having a number of IPs" to the 'new' initiative system, or switching how mystic adepts gain power points. Those have small impact on the world or the characters, and are meta-concepts. Nobody in Shadowrun talks about an actual fight in terms of "initiative passes" and Adepts don't describe their powers as "costing .25 of a Power Point".
But all that shit from 4th edition happened. That is how the matrix was, and was specifically changed from that. Meaning nodes stopped being a thing, technomancers went from complex forms being "how they do anything at all" to "the specific weird stuff only they can do", they can't slave devices to their Living Persona anymore...
The TMs had to have actually experienced that, right? I mean, reworking the matrix would be for a TM what someone completely rebalancing all the mana in the world would be for magicians. Do you think it's intended that somehow none of the TMs remember being able to do stuff they can't do now, or that all the technomancers slowly "evolved" to fit the new matrix? Was there a period of minor-mayhem as all the TMs were disoriented and uncomfortable with their powers for a few weeks?
I don't think it can be just a retcon, since people know the matrix changed and will probably make reference to it. I mean, you can assume deckers (once they bought the new gear and got used to the new handle) were probably frustrated about having to learn how to crack again. The ones that didn't get "early access" anyways...
I like the idea of my character being kinda pissed that she had to get comfortable with her powers all over again because The Man decided to shake up the matrix, angry that now she can't slave anything to her now non-existant "bionode", the loss of which was probably a little traumatic, while at the same time just realizing that the new matrix is more "open" to the resonance, allowing her to do crazier stuff than she could before.