Very nice. Kevin at D-Tek was predicting availability of second hand ICEs a year or so after launch as people upgraded to a custom Trice, but this could mean people upgrading to a new ICE (well, apart from the fact that the "standard" models are now Trices too not ICEs).
However, for the "upgrade to suspension" route there is an alternative for existing owners. The new suspension rear appears to be retro-fittable to existing ICE models (think it says that on the Trice website), it might be more financially attractive to replace the rear-frame than suffer the depreciation of trading in an old model and purchasing new.
The old suspension rear was fittable to the old trices anyway - so there's been an upgrade-to-suspension route for some time. Look at http://www.ice.hpv.co.uk/images/trikes/features/appart2.jpg - the assembly attached to the rear wheel can be substituted by the equivalent with suspension, eg, looking at http://www.ice.hpv.co.uk/images/trikes/features/seat_up_large.jpg the joins can be clearly seen (silver line round the frame) at about the middle of the picture in the lower member and just above the suspension mount in the seat support member. I understand the central frame part is the same, whether the back has suspension or not.
So I believe, anyway.
The new models do look nice, but I'm afraid my structural engineering prejudice intuitively prefers triangulation - curvy cantilevers are really not my thing - and I prefer the look of the old suspension back end.
However, for the "upgrade to suspension" route there is an alternative for existing owners. The new suspension rear appears to be retro-fittable to existing ICE models (think it says that on the Trice website), it might be more financially attractive to replace the rear-frame than suffer the depreciation of trading in an old model and purchasing new.