Announced in 2014, the Zenfone 5 was (and still is) a very good phone. Although Asus announced the update for the Lollipop, it just gets being delayed over and over again.
Last time, the update was said to be released on mid-May, but now via a Facebook post on Asus India page, the update will take another 3 to 4 months to arrive. The delay might be a local one, because Indian Carriers must sign off on the update, but until then, there will be a lot of unhappy people.
Due to the similar internal components of the Zenfone 4 and 6 , the delay might affect those two devices aswell.
The Padfone S update was announced together with the Zenfones’, but we still don’t know if the delay is going to affect it.