I mean it effectivly makes encryption useless, someone with a quantum computer could just brute force a private key from a public key in no time. This will kill every crypto currently out there.
No. If quantum computing does become a reality, the time taken to bruteforce a private key to a public key will decrease substantially but not to that much magnitude.Do you think we will see new quantum cryptos released once the technology is ready? Or do you think Bitcoin will adopt a new layer of quantum security if that is even possible?
Yes. 
I am not currently aware of any development on such an algorithm for now. With reference to my initial post, the security risk of this can be easily mitigated. As long as people do not reuse addresses, it is quite hard for anyone to profit using a quantum computer. Speaking of profits, the cost of operating one is quite expensive and not everyone can have their hands on it.