While the article is interesting, I really don't think the big changes are coming yet.
In the current meta I will pretty much always be happy to be facing a Nasir across the board.
Quetzal might change the ICE ratio further away from barriers to code gates as go-to ICE but that has been going on for some time now since very few good barriers have been released in lunar / spin cycle but several very good code gates.
Blue Sun is quite similar to the already existing HB big ice decks, it will be one of the options for corp-players that don't want to focus on the speed of NBN but really doesn't demand much if any adaptation to current decks.
Stealth is still up in the air, but it seems likely that it will be a viable way to break some ICE. I am having some good results with Switchblade but I can see some of the other breakers work as well. We are still some way off from a full stealth rig in competitive decks though.