Nit: Copy has always been a builtin auto trait so it has always been implemented. You are right for the other traits.
(also as other commenters point out, std builtin types like Clone etc have already been supporting larger array sizes because of the standard library's ability to use unstable features, but before const generics were available as an unstable feature, that restriction very much did exist, and now crates from the ecosystem can use it too).
(also as other commenters point out, std builtin types like Clone etc have already been supporting larger array sizes because of the standard library's ability to use unstable features, but before const generics were available as an unstable feature, that restriction very much did exist, and now crates from the ecosystem can use it too).