Apparently they are going to come out with a "T10C2 L" with slightly more throw (same output I guess, just a different beam pattern); it will apparently have the lens built into the head so it can be used with the bezel off. Apparently it can also use 18650s, but isn't as well regulated a the T10L. Light-reviews has it listed under "upcoming reviews," so you might want to keep an eye on that.
I would really like to see a smooth reflector for the T series designed for more throw (If you are listening Eagletac...). With the amount of lumens the T series lights put out, they could have a lot of throw with a properly designed smooth reflector.