What will happen to bitcoin after CBDC's realeases ?
Cbdc's are already in use in some nations, plenty others are creating one and going to release it soon, you make your post sound like cbds's are projects that are going to be released many years later, and we have to think now what will happen to bitcoin, no, cbdc's are present now and nothing has happened to bitcoin, when cbdc's become more popular and used, nothing is still going to happen to bitcoin, do not believe the lies, cbdc's and bitcoin are completely different and neither one can influence what happens to the other.
Rightly said and I don't understand why people will even ask or think that cbdc can have any effect or influence on Bitcoin and every other crypto. I think people should even take out time to understand what Cryptocurrency is and what cbdc is and would see that they are totally different. OP must not have known the cbdc is already launched in some countries and it is not something that is coming in the future.