Today, August 10, 2015, Open-Mesh Inc. is announcing the End of Sale for the MR600 model.
Customers evaluating the MR600 should consider the MR1750 or OM5P-AN. The MR1750 has the same form factor as the MR600, but the 5 GHz radio is 802.11ac rather than 802.11n, and each radio is 3x3 rather than 2x2. The OM5P-AN is 1x1 on 2.4 GHz and 2x2 on 5 GHz.
Information on the current line of access points can be found here: http://www.open-mesh.com/products/access-points.html
As per Open-Mesh's current EOS policy, the MR600 will continue to be offered for sale until current stock is depleted.