BESIII

With about 12 fb$^{-1}$ collected, useful data set for $XYZ$ new resonances, BESIII continues the exploration of these exotic charmonium-like states. In these talk, recent results of the measurements of the line-shape of $e^+ e^- \to$  (3686), $K^+ K^-$ J/, and  $D^0 D^{\ast -}$, as well as the $J^P$ determination of $Z_c(3900)$ and $Z_c(3900)$ observation in $e^+ e^- \to$  c1/2 at $W=4.6$ GeV will be presented. Present Belle data on the candidate charmed baryonium $Y(4660)$ are barely in agreement with present BESIII data above the $e^+ e^- \to$ ccbar threshold. These data will be shortly discussed. A BEPCII upgrade has been funded, that will allow to settle this open question.