It seems @C0rpVultra is close to getting his v5.01 project completed, meaning we might be updating from v4.55 soon!
It is still a 'work-in-progress' project, so don't rush and update from v4.55 firmware just yet, as payloads, and exploit hosts need updating, but scene developer @C0rpVultra says its occurring and has launched his WIP GITHub page, and is busy putting together the final bytes.
OFFICIAL WIP SITE: --> https://github.com/Vultra/PS4Linux_5.01
ORIGINAL NEWS SOURCE: --> https://twitter.com/C0rpVultra/status/992757341027291137
NEWS SOURCE: PS4 FW5.01 Linux Loader released! (via) HackInformer