Question regarding update protocol for people with owned licenses.

[محروم.كوم]

Alright* i currently have an active owned forum license and roughly 7 months more worth of support.

What i would like to know is:

1. Will it be free for me to upgrade to 4.0x? and will i get updates for the rest of my remaining term?
2. If when it comes for my license to be "renewed" will i have to purchase 4.0 again? or just pay a normal renewal fee? or will i continue to get support for as long as 4.0 hasn't reached end-of-life?

3. Is it possible for me to renew my license for as long as i wish with the normal renewal fee as is (entitled to me by law)?

Edit: Also will i be able to upgrade to 5.0 when it comes out or will i have to buy 5.0?
Thanks in advance __DEFINE_LIKE_SHARE__