Is Magnepan is coming out with it's own amplifier

Sort of. It is an amp made for them, which they will market and distribute for use with their loudspeakers. The amp has been discussed on the Planar Speaker Asylum site, info provided by amongst others a great fella and contributor named Josh, Wendell Diller's middleman to audiophiles. 

Okay thanks I'll try to find it over there, I find that forum difficult to navigate sometimes.

Yeah, that Forum can be viewed two different ways. One is pretty straightforward (choose "Classic" view), the other (something to the effect of "Show all info') a real mess. 

Not a good idea for a speaker manufacturer to put out their own amp. Other electronics manufacturers will stop recommending their speakers and may even bad mouth them. Acoustat made that mistake and look where it got them. 

Acoustat made that mistake and look where it got them.

I don't think that had anything to do with Acoustat going under.  If so, it was a very small part.  I was an Acoustat dealer from almost the beginning to the very end.  Once Rockford Fosgate bought them, they just didn't put the time, effort and money into the line.

Look at Sanders Sound Systems.  Roger makes electronics and does quite well.