Information for all these who aren't lucky with the original one:
I got mine last week. They have made a new die casting very similar to the original one. You have to move the front height adjusting bar and the two rubber parts at the back to the new seat. It is possible to get the seat in both positions in the same way like the original one.
The foam is much more stiffer, so it don't feel like a sofa, but after todays one and a half hour ride I hadn't any problems with my backbone. I took the one with 30 m more height so I sit a bit higher than in the top position with the Triumph original one when mounted in the lower position.
The feeling is that I sit a little more on the bike than in the bike.
The colour runs with the original pillion seating with a little difference.
Cheers,
Tiger-Willi