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.