Yes, they do. Actually they have them for all the various generations, GEN4, GEN5 and now GEN6.
I have compared the file structures of the 2011 disk from a 10.1 2011 Highlander to the 9.1 2010 disk from a 2008-2010 and they are very different.
From the part numbers, I see that 2011 seems to come with GEN6 Nav system. 2008-2010 has Gen5. There are different part number for the GEN 6 disk than from the Gen 5 disk. When I put a GEN6 disk from an 2011 highlander into my 2009 GEN 5 and it would not work at all. Actually, it made it go completely nutz, would not eject the disk, radio would not work. Had to disconnect the battery to get it to eject.
There was a torrent out breifly for the GEN5 10.1, but no seeders now at all.
If you buy it, make sure you get the right version for your year or you will be stuck with a very expensive coaster!