Aruba Instant supports MESH for the IAP-105; IAP-134 & 135. It does not support MESH for the IAP-92 and 93.
Here is some detail:
1. Dual-radio only (i.e. IAP-105 )
2. Over the air provisioning (active only when one Aruba Instant mesh network is being advertized, will not work for ROW version) and over the wire provisioning.
3. Max hop count =2 (point->point->portal)
4. Max number of mesh points per mesh portal is 8
5. A mesh point cannot become the Virtual Controller
Aruba Instant Mesh will not support LAN bridging or secure wired pass-through
Hope this helps