iQoo Z9 series could soon be expanded with the addition of a new model, according to details shared by a tipster. The lineup currently comprises the iQoo Z9, iQoo Z9x and iQoo Z9 Turbo — these models were unveiled in April. Now, an iQoo Z9 Turbo+ model is said to be in the works and is likely to join the other handsets in the series. Details of the chipset that could power the handset have also leaked online. Given the “plus” in its…