Both the ASUS ZenWatch 2 and 3 were confirmed to receive the Android Wear 2.0 update back earlier this month. While a few weeks of waiting are to be expected with major update rollouts, ASUS says ZenWatch owners will have to wait a while longer.
In a response to a ZenWatch 2 owner asking when to expect the update, the Twitter account for ASUS North America stated that it won't come until Q2 2017:
@jclendineng Hey Joel -- the Android Wear 2.0 roll-out start date was last week, however, AW 2.0 will not come to the ZW 2/3 till early Q2.
— ASUS North America (@ASUSUSA) February 23, 2017
For those of you wondering, Q2 2017 is from April 1 to June 30, meaning the update is potentially as far as three months out. So if you're a ZenWatch owner, expect to wait a while.