Highly unlikely, I don't think Apple has ever released multiple branches of updates for any device. The closest is perhaps iOS 6.1.6, a fix for the fatal "gotofail" SSL vulnerability, which was pushed out to devices stuck on iOS 6.x, but if your device was eligible for iOS7 then iOS7(.0.6) was what you would get.
That's also the only time I can remember security updates being pushed after a device model being end-of-life'd.
That's also the only time I can remember security updates being pushed after a device model being end-of-life'd.