Yes
No. Not yet at least.
iOS 5 isn't out yet. It will be out on October 12, 2011. There are beta developer versions available but you need to be a registered developer to access them.
You mean the 'Edit' button on Photos? You just have to be on iOS 5 up to get this button. It's a built in iOS feature. If you are not yet on iOS 5, you can update using iTunes.
It is due out for this fall. Probably around the same date for iOS 5 and 4S. No specific date has yet been released, but see related links for a preview of what to expect.
Yes, now Greenpois0n can jailbreak iOS 4.2.1.
Yes, Apple iOS 5 is free.
The apple iOS 5 update IS OUT NOW
unfortnately there is no ios 5.1 jailbreak at the moment but it is coming soon. Yet there is a tethered jailbreak for ios 5.1.
You cannot. If you buy a new iPod or iPad or iPhone, it comes in iOS 4.3.3 and you have a choice to update to IOS 5 or not.
The apple iOS 5 update IS OUT NOW
Yes, we are up to iOS 7 beta 4 so far and this beta is available to iOS developers.
Yes you can.