Unleashed was launched back in October 2015. At the time of launch only WAVE-1 APs were available and given R500 and R600 were the most popular and high volume APs in controller portfolio and the fact that Unleashed target customers are cost sensitive we decided to launch Unleashed with those two mid-range APs. Three months later we added outdoor model T300 and entry level R310.
By that time our R710 was ready and hence, instead of R700 (being WAVE-1) we added R710 (WAVE-2) to Unleashed portfolio.
I hope that clarifies it better!
Regards
Nat