A few noteworthy things were merged for the ARM architecture just yesterday. I'm not sure if they got left out because they were buried under all the other patches, or because the list was made before they got merged.
These are the top three in my opinion:
* common struct clk: This has been worked on for years and finally got to the point where enough people can start using the version. Work is continuing in tree, but I expect a lot of conversions to this in v3.5, as a big step towards a single multiplatform kernel image. See also http://lwn.net/Articles/486841/
* Support for the Samsung Exynos5 platform, the first one supported upstream that is based on the ARM Cortex-A15