Sony mentioned that the PS4 update is called update 4.5. It will add new features and also make some improvements.
Like the previous update, this time too, Sony invites beta testers for play and test the update. The registration link is here. You will need to be of 18 or more and have to enter your PSN ID to get the access to beta. Finally you will get to test the update or not is sure.
The beta test will start in early February.