HTC certainly wanted to show that it had done all in its power to have the update made within the 15 days it had previously mentioned, thus the tweet sent out on Friday. So now it is up to Google. Hopefully, whatever Google needs to do to have the update distributed OTA to the HTC One Google Play Edition won't take much time.
carrier bought HTC One models would be updated in 90 days. However, we should point out that HTC has not always sent out updates when expected, and even update schedules tweeted by HTC America president Mackenzie have been delayed.
source: @HTCUSA via AndroidCentral