Corona Renderer - Box License Extension : Includes One year of free Update and new release for your Perpetual license
The Corona Renderer 4 For 3ds Max 1-Year Maint. Subscription Renewal
lets you access daily builds, monthly builds, and any major versions released when the subscription is active. It can be
bought only as a Renewal of your Corona Renderer 3 For 3ds Max -- Box License with Subscription
. It is valid for 12 months. You can use any
Corona version released during your active
subscription even if you let the subscription expire.