The measurements of the new version of the X5T are one thing, but seeing the new light vs. the old one is another. I went into Target and compared about 6, picking the whitest and brightest (not much variation between most of them, though). All had the lanyard in the package.
Comparing the new one against the old one (several samples at home), I was very pleasantly surprised. DEFINITELY twice as bright, and sightly more white in color as noted by Quickbeam (same LED & color as the new X1). Definitely more throw (the beam of each of the new Nichias seem to be a bit narrower), but the new light is an even better flood light than before, for indoor use or walking outdoors. Don't know about the runtime, but CR123 batteries are my choice for emergency use and cold weather performance, and I would be surprised if the new X5T is very different from the old one as far as runtime goes.
If you liked the old X5T, you'll like this one even more, and if you carried the old one for any purpose you will want to replace it with the new one.
I'm surprised that Inova doesn't make any advertising claims about the improved version. The improvement is significant!