Their is no even guarantees 😂 if CBDC will even be a successful project,  I feel the government are just trying to get their own digital currency, and I don't even know the essence for CBDC. I'm sure CBDC won't be volatile like bitcoin,  since CBDC it's a project coming from the government their won't be any different between it and fiat.
When it comes to value I don't think CBDC will be  different from the traditional currencies, I don't see how this will be benefit the people,  it is just an imitation of bitcoin that may not work.