I received the Digitaldrummer mag a few hours after you posted..didn't find much more info online...patent filings etc etc( including Guitar Center) other than the "Explainer" manual for the Kick floating around (Attached).
The cymbals are the first "production" low volume models I have seen with a strike pad.
It looks like a 180 degree switch for the Edge and no image of the bottom.
I know some modules (including the eDRUMin) do not like the waveform produced by Metal Cymbals maybe the strike pad will affect the waveform for the better.
October is here so according to the info they will be on the market soon enough..
No idea why starting with Individual Pieces..maybe to get part of the DIY Market like Goedrum and Lemon..pricing is reasonable.
..I don't know about using the Brown/Tan color..
EDIT:The New Accessories page was being worked on and Kit Pieces were being added to the
SIMMONS website while I was posting..currently links for the individual products are not working and the New
Accessories page link may be hidden/stop working by the time you see this post.
Looks like they are targeting the DIY'ers..Upgraders etc..
"With Simmons Accessories you can easily upgrade almost any brand and model of e-kit. You are no longer stuck with what you have, upgrade your e-kit your way".