Kernel release status
The current development kernel is 4.13-rc3, released on July 30. Linus said:
"
Usually rc2 is the really quiet one, but this release cycle rc2 was fairly busy and it made me worry a bit about whether there was something bad going on with 4.13. But no, it was just random timing, and people got started sending in fixes early, and this release cycle it's rc3 that is small."
Regression tracking has returned for 4.13; the current report shows eight known problems. Note that Thorsten Leemhuis has adopted a new identifier mechanism to try to make tracking easier.
Stable updates: 4.12.4, 4.9.40, 4.4.79, and 3.18.63 were released on July 27.