Yes, obviously it will take many years before most of your devices (on both ends) supports the new standard. But for us enthusiasts it's finally moving forward, the new Audezes seems to be the first commercially avaliable device that supports both LC3 and LC3plus, I'm guessing there wlll be plenty of more devices next year.
When it comes the other end then newer Android phones already supports LC3 and It looks like there's USB adapters on the way for PC.
The benefit of LC3 is exactly the ability to give us great SQ even at a modest bit-rate... It seems to work great too judging by the test that you can take. This will be really beneficial for your portable life when you're out and about.
When it comes to critical listening and more "hardcore"- usage that's were LC3Plus comes in..
Here 2 features really stands out:
- Super wideband quality for VOIP (basically VoLTE)
- Super low latency
All of this whilst delivering high quality audio (500 kbit/s, 24 bit, 96 kHz).
The codec will most likely be way more stable than LDAC as well.
But yes, it will probably take many years for this to become a new standard even for normal people.
Here's the link were you can compare LC3 codec (from 64 kpbs to 248 kpbs) with SBC and no encoding at 1536 kpbs. LC3 sounds very close to the latter even at a much lower bitrate.
https://www.bluetooth.com/learn-about-bluetooth/recent-enhancements/le-audio/