Martin A.

Thank you. 👏👍
Still, remove the ability to hook is a huge step back and will make marketplace even worse and smaller but I guess that’s the point after all. A massive number of resources are dead.
We’re basically back to IP.Board 2 (file edits will be required for custom jobs as we can’t hook) and IP.Board 3 (back to hook points era). 
Anyway, just my feedback. Not trying to annoy anyone; just my honest feedback.
Tks.

That will be dealt with in UIExtensions. We're wrapping some things up on those before the blog entry, but it's coming.
We will be removing the block on base classes and you'll be able to add listeners to \IPS\Content\Item (or Comment or Review).

So the answer is no as there is no HOOKS tab anymore. So resources from now on will extend only official apps that I have in my license. If the user has another 3rd-party resource, it won’t work anymore because I don’t have all the marketplace resources out there to add listeners since it checks for the class. 
Great improvement.