Firmware 5.1 has been around since the end of May and as far as I know, there's been no word on a new system update. There's actually been a revision to the updating without burning fuses guide that automates 99% of the process with a tool known as ChoidujourNX. All you need to do is find the firmware update that you want to update. For that, try googling xbins and see what happens. That way, you can control what firmware you want to update to in case Nintendo does decide to drop a new system update.
Thanks for that! I will. In the alternate sense, if I just straight up update to 5.1.0 officially, I should be ok just fuse burning right? I was going to take it out of the box, update, go offline, wait till SXPro gets here.