Now supports up to 200 characters, in addition to other improvements.
A recent update to the Miiverse has increased the size of text posts to 200 characters.
This is an improvement over the previous 100 character limit. Other functionality has also been improved, allowing users to see all older posts in the popular posts category instead of limiting it to a certain time frame. This is welcome news after the recent addition of social media buttons.
Nintendo Network users can access the Miiverse by going to miiverse.nintendo.net