Fortinet suggests that customers familiarize themselves with the Fortinet Product Life Cycle Policy.

Particularly important to Fortinet customers are the three product life cycle milestones that each Fortinet product passes through before reaching the end of its life cycle:

End of Order Date (EOO) - The end of order date is the last date on which a hardware or software product may be ordered, after this date the product is no longer available for sale. Fortinet will provide a minimum of ninety days advance notice of the affected product’s EOO date by publishing an EOL notification.

Last Service Extension Date (LSED) - The last date at which an order will be accepted, for a product that is no longer available for purchase, for an extension of an existing contract for support or security subscription services. No service contracts may be extended past the EOS date. The last service extension date is 12 months before the EOS date for the relevant product.

End of Support Date (EOS) - The final milestone in the product lifecycle is the End of Support date. After this date which Fortinet, will not sell, manufacture or improve the product and is under no obligation to provide support services. In general the EOS for hardware takes place 60 months after the End of Order Date.