latest update? (secuity patch Mar. 1st 2016)

Hi I just saw some articles about nexus devices' March security update,

and saw that Factory Images for Nexus Devices site
has the latest build on MMB29V (Im on MMB29Q)

Did I miss something here?
When I check for updates, it says that my system is up to date.

Is the OTA still taking some time?
or is there something wrong with my N6?

thanks.

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