Yes,
there are more powerful Inovas coming. The specs about them is here:
T1: A 1 watter with one 123A lithium battery.
T2: A 2 watter with two 123A lithium batteries.
T3: A 3 watter with two 123A ithium batteries.
XO3:A 3 watter with two 123A lithium batteries.
T4:A rechargeable 4 watter.
Some of these flashlights are available now,at some online dealers. If you lurk around a little at this LED forum,you will find a source.