Kernel release status
The current development kernel is 4.17-rc4, released on May 6. Linus said:
"
Two thirds of the 4.17-rc4 patch is drivers, which sounds about right. Media, networking, rdma, input, nvme, usb. A little bit of everything, in other words." The codename has been changed, for the first time since 4.10, to "Merciless Moray".
Stable updates:
4.16.8, 4.14.40, and 4.9.99 were released on May 9.