Had a very interesting conversation with Steve, Operations Director of MMC, today.
It would seem there is a lot of misinformation being spread; I'm not sure if this is typical internet chatter or perhaps, in some cases, has a far more vindictive undercurrent.
Customer Morgan Three Wheelers are currently in-build. Chassis are being assembled, bodies painted and engines are fitted last. The current time scale is to have customer cars dispatched within the next 4-weeks.
The issue with weight would seem to be affecting road tax, rather than anything else; however, I am waiting for further comment on this.
As for correspondence from the factory and official information, the dealers all received a letter last week, asking for them to pay for their M3Ws, so that MMC could deliver them. This was the latest correspondence and the factory were not aware of any letter sent to the dealers (based around the dates that the OP mentioned - October 11th), which could have been construed in the manner mentioned in the first post.
The comment about going back to a Harley engine is utterly and completely false. A contract has been signed with S&S and they will be supplying the engines.
Lastly, MMC have a working solution to the vibration issue mentioned and have done extensive testing in the factory M3W (2,000 miles in the last week alone) to ensure the resolution is satisfactory.
I hope this is of assistance to those who have genuine questions regarding the new Morgan Three Wheeler.