So I thought the replays had been improved, but I can’t seem to find any controls - please can someone let me know if I’m missing something?
I can’t rewind. I can’t skip to certain time. I can’t move the camera and the player tracking stops actually tracking the active player.
I thought all this had been added/fixed etc with the latest update?
rewinds still aren’t added yet 
hopefully soon. If you want to move the camera you need to go the free camera mode, I think you have to press 3, and then turn camera tracking off.
Remember we dont get to see an actual replay but a recreation of the battle that took place.
Apparently that can be sped up but not rewound.
If I am not mistaken, I think keofox promised that rewinding would be a feature in the future.
You are not mistaken, in fact it should have already been available now.