802.11acintroduced gigabit speeds
The second phase of 802.11ac equipment, also referred to as Wave 2, is set to hit the shelves early next year and will undoubtedly give networks a performance boost that will force networks to invest in upgrades.
According to Tech Blogger Gina Narcisi,
The first wave of 802.11ac routers currently available on the market are based on earlier drafts of the 802.11ac standard and will no longer be the fastest standard on the market. The second wave of 802.11ac devices are based on the final ratified standard and are set to include new features that better optimize wireless networks.
802.11ac standard: Wave 1 vs. Wave 2