We shouldn't forget, that the Estrella (it's main parts) celebrates its 15th Birthday next year!
There were changes in the motor in Japan, but up-to-date technologie with fuel injection and a 3-way-kat (don't know if foreigners understand the expression - translated from German) would mean big changes.
In 1996, the Estrella had much better enviromental data than most other bikes! The Estrella fullfilled "Euro 1" 2 or 3 years before introduction. But that's 10 years ago.
As far as I have heard, 2006 is the last year for the W650 in Europe.
Because of the restrictions. So, only Triumph, ENFIELD and URAL survive, building Retro bikes for Europe.
I wonder what technology the W400 will have!
If Kawasaki wants to sell it more than 5 years, it should have fuel injection and a 3-way-kat.