The unitary dual conjecture for classical groups

Let $G_n$ be the classical group under consideration. Let $\Pi_{\overline{A}}^{\lim}(G_n)$ and $\Pi_{\overline{A}}^{\lim'}(G_n)$ denote the sets defined in the preceding discussion, where the latter allows the parameter point to lie in the closure of the relevant connected component. Unitary dual conjecture. The unitary dual is described by

$$\Pi_{\overline{A}}^{\lim}(G_n)=\Pi_{\overline{A}}^{\lim'}(G_n)=\Pi_u(G_n).$$

This conjecture asserts both that the two constructions from Arthur representations coincide and that they exhaust the unitary dual; its resolution is not established by the supplied text.