Nintendo is continually tweaking and improving its Miiverse social network, with changes varying between the Wii U, 3DS and web browser versions. Sometimes the enhancements are major, though as it's a web-based platform Nintendo also applies minor adjustments, as they don't require any download or installation from users.
Today has brought a smaller update for the web browser version, which makes a minor change to the starting screen for those logging in but, more importantly, opens up more posts to those yet to set up a Nintendo Network ID. The post confirming the update is below.
There has been an update to the web version of Miiverse today.
1) When you sign in to the web version of Miiverse, you will now be taken to the Communities screen, rather than the activity feed.
2) Previously, users who were not signed in with their Nintendo Network ID could only see a digest of popular posts from each community, but they can now view all of the popular posts, as well as the comments on those posts.
Minor changes, but it's certainly a bonus that those without an ID can access more of the platform — more opportunities for everyone to see drawings of Nintendo characters.