After the recent adjustment to strike "inline" from constexpr variable templates, the following cases are still present (looking at the N4944 pre-CD working draft):

[ranges.syn]:

namespace views {
  template<size_t N>
    inline constexpr unspecified adjacent = unspecified; // freestanding
  [...]
}
[...]
namespace views {
  template<size_t N>
    inline constexpr unspecified adjacent = unspecified; // freestanding
  [...]
}
[...]
namespace views {
  template<size_t N>
    inline constexpr unspecified adjacent_transform = unspecified; // freestanding
  [...]
}

[range.refinements]:

template<class R>
  inline constexpr bool is-initializer-list = see below ; // exposition only