Despite the fact that Android Wear 2.0 was said to be ready in February, which is when updates for it should have started, even today there still are a lot of supported watches that don't run the latest software. Thankfully though, today Google has unveiled a time frame for when you're to expect the Wear 2.0 update to finally grace your device, if it hasn't already. And it looks like you'll only have a few more weeks of waiting, tops. Google says the remainder of watches should receive Android Wear 2.0 in late April to late May. So yeah, the patience test that this rollout has...
Source: http://www.gsmarena.com/android_wear_20_will_arrive_on_the_remainder_of_watches_until_late_may-news-24643.php