JB is coming along this week. Have a look at http://www.sammobile.com browse into the Firmware section and look for N8000 firmwares. The Germany version is currently available and includes all the European Languages.
I flashed it on my GN 10.1 yesterday, it doesn’t look that much, no stunning improvements but there are some differences in the Web browser and some applications (S-Note and GMail for instance) look to be more responsive.
Enjoy it 🙂