No, the feature set is not finalized. This is just a random blog post, nothing more. Like who says "New Features Are Officially Announced"? Which source? They make it look like Java 23 is done, but it's not.
If you want see what's coming in Java 23 you have to check https://openjdk.org/projects/jdk/23/ - the only source of truth. If you look at the Schedule of that page you will see at least before Rampdown Phase One there still is time to add new JEPs. And there will more JEPs be added for sure, that's how it was done in the past.
If you want see what's coming in Java 23 you have to check https://openjdk.org/projects/jdk/23/ - the only source of truth. If you look at the Schedule of that page you will see at least before Rampdown Phase One there still is time to add new JEPs. And there will more JEPs be added for sure, that's how it was done in the past.