Mother's Day varies depending on the country we are in. In Spain, since 1965 it is celebrated on the first Sunday of May, but the date varies depending on the territory from the second Sunday of February in Norway to December 22 in Indonesia. According to Wikipedia, it is the second Sunday in May that has the most celebrations, and yesterday May 14 was celebrated in the United States and in Finland. Linus Torvalds is Finnish, so he said that He launched Linux 6.4-rc2 On Mother's Day.
And it was a mother's day that came after a fairly quiet week, which is also normal. It's in the second Release Candidates that things start to find each other, and the hustle usually starts already in rc3. Although Torvalds does not say so, it cannot be ruled out that everything has been somewhat calmer because last week was Mother's Day in the highest number of countries on the list, and some collaborator could have relaxed a bit. But the news is that everything is normal for this development week.
Linux 6.4 will arrive at the end of June
It's Mother's Day, which obviously means you can surprise her with a new kernel. And you're in luck, as I've just released the latest one: 6.4-rc2 is available in all the usual places.
Being rc2, it's been a pretty quiet week as people are only starting to run into issues with the merge window, but everything seems to be going well. The statistics are unusual, in that they are about a third of drivers (mostly gpu, some media, and networking), a third of filesystems (ext4, btrfs, and xfs), and a third of "miscellaneous" (mostly self-tests and documentation updates, but there are also some arch updates and some kernel code).
Linus Torvalds usually releases seven Release Candidates before the stable version, and if the forecasts come true this time, Linux 6.4 will arrive on June 25. In the case of requiring an eighth, 6.4 would already arrive in the month of July. Ubuntu users interested in installing it when the time comes will have to do it on their own, either by performing the manual installation or by pulling tools like Mainline.
Ubuntu 23.10 will arrive in October, and it will do so with a kernel that will be between 6.5 and 6.6. If it is not manually installed before Mantic Minotaur, it will be uploaded, as usual, without going through the intermediate versions.