Kernel release status
The current development kernel is 4.4-rc3, released on November 29. Linus said:
"
I don't think there's anything particularly exciting, although that obviously depends on whether some particular issue ended up affecting you or not. Most of it is pretty tiny random fixups."
Previously, 4.4-rc2 came out on November 22.
Stable updates: none have been released in the last two weeks.