This is out of the question for any normal user and is also not reliable at all. When you install a Jailbreak you are by default giving up on a plethora of apps which do proper checks and they won't work at all even if you try to bypass them (banking especially).
Older iOS versions have other problems as well. Safari is not an app that you can update, it's part of the OS. A lot of websites will simply stop working for you if your version is too old.
Newsroom post is just better, I don't understand the need for this.
Are you going to verify that the alternative article is accurate and doesn't interpret the official information in a bad way (I mean in general--not saying that about this announcement)?
I've been running a 3900x under Linux since release (got it 14.07) without any issues.
Support was great day one, but of course you needed a new kernel, not something that was running on your 2010 web server.
Older iOS versions have other problems as well. Safari is not an app that you can update, it's part of the OS. A lot of websites will simply stop working for you if your version is too old.