I read in some publications about that Bell must be working on a replace for the
206 discarding the two blade rotor, but are speculations.

Also some people speculates about an Updated 430, as EC made with the BK117,
with a new composite body, new engines and a new quiet tail rotor.

And more, a quiet tail rotor (as the apache's) kit, to be installed on the
407/427 models, will be offered.

Who knows more? w/o Speculations.
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Goku Rules ....