How to answer this without causing hype and possible disappointment.
If I said soon... people would expect it tomorrow or next week so I wont say that, Its being worked on by someone outside our current development team who has been very dedicated to the project so far and has got a shit load done as the person who was working on our FiveM has gone missing!
Some people will wonder why we haven't put more devs on this. Our current development team are very committed to Arma 3 that's there interest and enjoyment and its what they love developing, FiveM is not everyone's cup of tea and that must be respected.
This community is also very much committed and dedicated to Arma and that will remain the priority until the bitter end of Arma 3.
It's being worked on and when its ready for the public to have a play and feedback we will make that happen, things will be different of course than Altis because scripts are mainly not being made from scratch as the ground work has been done on the FiveM forums (go have a look!)
We are of course putting the RPUK look and feel on things and making things unique to us but understand there is one person on it at the moment, People will need to understand release will be early days... things might not be as developed as other servers... things might be missing or not working.
In the coming days, weeks there will be a whitelisted test where we will hold applications in search of people who can provide brilliant feedback.