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Timeshift video and 4k on the Xperia Z2 makes me jealous, so is it possible Sony could add it on the next update for the Xperia Z1? That would make all the Xperia Z1 users very joyous. Just to let you know I have been a fan of Sony since 2007 
(Thanks in advance, Sony!)
This has been asked before,please use the search button before posting.Wait for Z2 to be released and keep an eye on the sony blog and twitter.
I'm sorry about that, I really just wanted to post this because I'm really jealous with it.
I know,Sony will probably consider this when giving 4.4 for Z1.Just be a little more patient.
I hope we don't have to pay for them features.
That is not in my knowledge to say.
But you're able to ask Sony about it, are you?
I am just a forum moderator,not a sony staff member.You could contact xperia care,but I doubt they will tell you:
http://www.sonymobile.com/global-en/support/contact-us/
I've sent it, where are they going to reply? My email or my phone?
I think they will reply to your email which you already set for the contact.