Kevin Ash has a review up now:
Triumph Tiger Explorer review | Ash On Bikes
Cheaper and better than the GS, says he.
As do Visordown:
First Ride: Triumph Tiger Explorer 1200 review - Road Tests: First Rides - Visordown
They liked it too, but preferred the Crosstourer by a small margin.
Oddly neither mention the Super Tenere as a point of comparison.