Looks like Spektrum is doing a major product upgrade. An all new DX6 has been announced that has many features from the DX9 including voice alerts and 250 model memory, wireless trainer link, plus more advanced programming and cool new looks.
The DX18t is based on the 10t but with more channels and the now 'standard' features of voice and 250 model memory, etc.
The DX18 v2 gets voice alerts, 250 model memory and wireless trainer, plus a few minor updates. Visually it's little changed from the 'old' DX18: http://www.horizonhobby.com/products...ode-2-SPM18100
This leaves the old DX6i and DX8 looking a bit out on a limb in the Spektrum product range, and maybe some DX18QQ owners feeling a bit hard done by, but I guess that's progress! IMHO it was all inevitable when FrSky released the Teranis, which of course is a good thing.