Microsoft made a big splash this week with the launch of the first Fast ring Insider build to hit PCs in several weeks, but it turns out Windows 10 Mobile has quietly received some love as well. Without so much as an announcement that it was coming, Windows 10 Mobile build 15240 has also started rolling out to Windows Insiders on the Slow ring (via Neowin).
Typically speaking, when a new Slow ring build is released, Microsoft will update the original Fast ring notes for the build in question. That's not the case with this release, however (at least at the time of this writing).
In any case, Slow ring Insiders will get access to a few changes with build 15240. In contrast to other recent builds, this one packs a little more excitement with support for Emoji 5.0, which includes new snacks, dinosaurs, and even zombies. This build also adds support for the Chinese Lunar Calendar, along with several other general fixes and known issues.
If you're enrolled in the Slow ring, you should be able to grab this latest build now. As for Fast ring Insiders, don't expect any new builds to hit the scene today.