Nintendo is also updating the Nintendo 3DS. Firmware 4.5.0-10U is available for download. It shouldn’t take you very long to update. Ours took about two minutes to do so.
The changes are to improve system stability and enhance the user experience. Hopefully we get more info on when Miiverse will arrive on the 3DS tomorrow in the Nintendo Direct presentation. Perhaps this update hides some secret feature that will be revealed tomorrow?
We can only hope.