What it does
On 6 July 2026 F5 announced a move from a quarterly to a monthly security release cadence. This tool turns that schedule into concrete dates you can plan against. Pick a starting date (it defaults to today) and it lists the upcoming F5 hardened software releases and the security notifications that follow them, and tells you the next of each.
The whole cadence reduces to one rule. Hardened software releases ship on the third Wednesday of every month, starting 15 July 2026. A security notification for each release is published one month later, and because F5's own anchor dates line up to third Wednesdays (15 July release, 19 August notification), each third Wednesday carries both events at once: that month's hardened release ships, and the previous month's security notification is published. The one-month gap is deliberate, giving you a window to update before the vulnerability detail becomes public.
The dates are computed locally by simple arithmetic; nothing leaves your browser. They are the scheduled dates: F5 continues to issue out-of-band security alerts and engineering hotfixes for urgent issues at any time, and it explicitly retains flexibility to adjust the timing or content of a notification where legal, disclosure, exploitation, or customer-protection considerations require.