No I didn't, because that would be weird and probably wouldn't make much sense from a marketing standpoint.
We cubers know a lot about what it takes to make a good cube nowadays, personally if I saw a really decent design, as well as hearing the opinions of those who have briefly tried the cube at competitions, then Maru would have a new customer. Me.
Considering the fact that there is more competition than ever when it comes to buying and using a speedcube, why on earth wouldn't you publish the mechanism?