Scala 3 has type-classes as a core feature.
Right. We don't have a full production 3.0 release yet, so I tend to think of "Scala" as Scala 2 unless it's specifically qualified as Scala 3.
Scala 3 seems to be a really good step in the right direction for me. There's a clear desire for many of the features that are currently achieved through burdensome hacks on top of implicits, and actually reifying several of them into core language features is a counterintuitive way to make things simpler rather than more complicated.
As far as I'm aware implicits are alive and well in Scala 3 and will, I predict, be Scala's ultimate downfall.
In many ways, it's even worse than that. Scala has exactly two features (implicits and punctuation-free method calls) that allow you to build massively complicated libraries that pretend to be language features, and which work worse than equivalent features in languages that support them explicitly. A good example of this is typeclasses which are core features of haskell and rust, but are implemented by explicitly passing implicits (hah) in Scala.