Linus Torvalds released the 5.6-rc1
prepatch and closed the merge
window on February 9; at that point, 10,780 non-merge
changesets had been pulled into the mainline repository for 5.6. That is
substantially less than recent development cycles (14,350 for 5.5, 14,619
for 5.4), but is similar to what was going on at this time last year
(10,843 for 5.0-rc1 in January 2019). About 6,000 of those changes were
pulled since the first 5.6 merge-window
article was written; read on for what was included in those changes.

Source: LWN.net – [$] The rest of the 5.6 merge window