Nintendo 3DS update (version 7.1.0-14U) was released today and should be available to download. There's not much to get too excited about as the update offers "further improvemetns to overall system stability and other minor adjustments to enhance the user experience." Those of who you have already discovered the adjustments that have been so cryptically noted, feel free to share them with us in the comments below.
Meanwhile, earlier this month, Nintendo issued a much larger update that actually added two major features. Update 7.0.0-13U added support for Nintendo Network IDs, as well as support for Miiverse. Additionally, it added a software update notification, removed the limit to system transfrs, and also improved system stability.
And for those of you who own a 3DS — which I'm assuming is everyone since you're looking up this update — you might be interested in a few of Nintendo's announcements from the latest Nintendo Direct held earlier this week.