The protocol that's been called HTTP-over-QUIC for quite some time has now changed name and will officially become HTTP/3. This was triggered by this original suggestion by Mark Nottingham.
The QUIC Working Group in the IETF works on creating the QUIC transport protocol. QUIC is a TCP replacement done over UDP. Originally, QUIC was started as an effort by Google and then more of a "HTTP/2-encrypted-over-UDP" protocol.
Source: HTTP/3 | daniel.haxx.se
If you're interested in what QUIC is and does, I wrote a lengthy blogpost about it: Google’s QUIC protocol: moving the web from TCP to UDP.