ZBrush 4R5 continues to expand on creative freedom with new features for sculpting, rendering and overall quality of life. These new features were designed to let you be an artist first and foremost, giving you more freedom to explore new ideas!
ZBrush 4R5 is a free-of-charge update for all registered ZBrush users.
If you have ZBrush 4R4, use the Zplugin >> Auto Update >> Check new updates button from within ZBrush. (Alternatively, browse to your ZBrush 4R4 folder and run the ZUpgrader application.*)
If you have ZBrush 4, 4R2, 4R2b or 4R3 (or have 4R4 and would like a full installer rather than updater) follow the steps here: CLICK HERE
If you have ZBrush 3.5 or below, Submit a Support Ticket.