The production of this part is following standard design practice and right now we are waiting for first article of the MCPCB. Once we get the MCPCB and determine the actual thickness the informaion can then be put into the drawing for the design and a prototype made.
How long will the prototype take? Don't know. This is a very bad time of year due to holidays it's very hard to get solid scheduling.
I can only keep you updated as to the progress and status. Who can predict if the prototype works and needs revisions changes and whether the MCPCB will be made to specifications, get lost in transit, wire transfer goes through. All these things are variables we have no control over.
I can say there is a probability of less than 1% that a prototype will be in our hands this year.
Wayne