We have 2 WLC 5508s running v126.96.36.199 and 70+ 1230, 1240, & 1250 series LWAPs. We are currently enabling LLDP because we will be installing some non-Cisco switches in the near future. Does the WLC5508 and the access points it controlls support LLDP?
That data sheet does not currently list LLDP (as LLDP) or IEEE 802.11AB as supported protocols in the product as it sits today.
I would encourage you to contact your Cisco SE, Cisco account team or Cisco authorized wireless reseller, and let them know you think that this support would be valuable to the wireless LAN controllers. The "sales side of the house" has procedures in place to gather and accumulate input from the customers they serve, and forward it to the respective business units within Cisco for possible inclusion in future releases of Cisco's products.