Read the main benefits of migrating Generation 1/Generation 2 Cisco Aironet Access Points to the latest Cisco Aironet Access Points.
For example, if you have the 1700 Series supports 802.11ac Wave 1 and you’re looking to expand your wireless network or deploy a new one, you can consider the next-generation Cisco Aironet 1850 Series. It supports the latest Wi-Fi standard, 802.11ac Wave 2, which doubles the performance of Wave 1. The 1850 Series is designed to meet the needs of small and medium-sized enterprise networks.
If you have Aironet 2700 Series Access Point, you can consider the next-generation Cisco Aironet 2800 Series.
If you have the Generation 1/Generation 2 Cisco Aironet Access Points, such as the Aironet 1600/2600/3600 Series, Aironet 1700/2700/3700 Series, you can consider the Latest Cisco Aironet Access Points: Aironet 1800/2800/3800 Series.
802.11ac Wave 2 for the Outdoors
Mobility Express-even better than before
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Info from https://www.cisco.com/c/dam/en/us/products/collateral/wireless/access-points/guide-c96-738164.pdf