Blackmagic have released updated drivers for the hardware and a new version of DaVinci Resolve. I have not yet tried the V11 drivers but on past experience I would not rush out to try them, and if your system is working properly, just leave it with the drivers you have installed.
The main improvements appear to be that it now supports the new capture devices they have just released, although there is a fix for syncing for Adobe Premiere Pro, if you capture using Blackmagic’s own program, Media Express.
Resolve 15.3 has various small improvements and support for the new Ursa and some Blackmagic RAW changes. There is also meant to be an improvement for importing AAF files. You can download the updates here : https://www.blackmagicdesign.com/support/family/capture-and-playback