I've spent a bit of time on the PTS mostly looking at the skill adviser. This is a feature that I have said many times over the past 3 years was missing from ESO. From what I have seen so far it's very well done with several templates per class some more basic and some more advanced.
The level-up rewards that you get are also a welcome addition with many useful items like crafting mats, a basic horse at level 10, a choice of blue weapons at level 15, costumes, consumables, XP scrolls, extra gold rewards etc. They even threw in one of the new 30 slot housing storage chests at level 17.
Whenever you go up a level you get a prompt to press F and the character panel comes up with a new panel on the left with the rewards. You have to claim those first and then it lets you add the points to stamina, health or magicka.
After you make that selection it takes you to the skills panel. That UI element now also has a new extra panel on the left which is the skill adviser. You can also bring this up whenever you bring up the skills pane with K.
Each class comes with 5 templates all of which have unique names depending on the class:
A basic new player template Magicka DPS Stamina DPS Healer Tank
You select one of those or "none" by clicking on the cog to bring up the build selector. Otherwise it defaults to the basic template.
There are 3 suggested class, weapon or armor skills/passives at any given time and then a list underneath of what you have already taken. Some of the 3 might be available at that point or have a lock symbol on the icon if you can't take it yet. Additionally, any skills that are part of that build now have a double border (a bit too subtle IMO, might need more work) on the right-hand skill panel so you can see what it is you're working toward at higher levels.
When it's time to morph a skill you also get green text at the bottom of the morph's description if that option is part of the build or red text warning you that it's not.
From the ones I've looked at I can't say that I'm in 100% agreement with some of their recommendations and a few things are a bit wonky. For example some builds may have only the 4th skill of a class skill line as part of it which means you need to unlock and slot at least one of the low level skills in that line or it will never advance up to the 4th one you do want. The adviser is not quite clever enough to tell you to do that yet but hey, baby steps, and much better than nothing for new players.
If you know what you're doing with class builds there isn't much there for you other than just satisfying your curiosity about how ZOS recommends you do it. But this new thing is not really aimed at the clued-in.
Damn good additions for new players all in all.
“That's how the madness of the world tries to colonize you: from the outside in, forcing you to live in its reality.” ― Jeff VanderMeer, Annihilation