It was understandable when early pre-release specs listed the Nexus 5 as having a fictional 802.11nc (as opposed to 802.11ac) Wi-Fi, which many definitely noticed at the time. After all, the Nexus 5 wasn't official yet, and something like that could have been a typo made by a PR person or an intern.
Just two days ago, we saw how blazingly fast Qualcomm's new Krait-based Snapdragon S4 CPU is in dual-core MSM8960 guise. Today, they've announced that the S4 line of CPUs - including the MSM8960 and its quad-core brother APQ8064 (seriously, who came up with this naming system?) - will pack the next-gen 802.11ac Wi-Fi spec.
Support for the new spec comes courtesy of Qualcomm's Atheros WCN3680 chip, which packs a 1x1 802.11ac chip with Wi-Fi, Bluetooth, and FM on-board.