yep,
12 strings tuned an octave higher than a standard 12 string guitar... and it does do E-standard tuning too, although i did have a g-octave string snap on me twice now. (since this is 14 1/4" scale thats the equivilent of tuning the high e on a 28.5" scale up to G - so i wasnt surprised both times it happened to me! - just testing its limits)
It will work tuned in unison with the main string or all tuned down to D- standard. And this is 1 1/2" shorter scale length than most mando-guitars, god knows what the tension is like on them!