Back in October last year, HTC confirmed that the One mini 2 will receive an Android 5.0 Lollipop update, but now it looks like the update has been cancelled. Responding to a query on Twitter (see below), the company said it has determined that Lollipop on the One mini 2 will not provide an optimal experience, and hence it won't receive the update. @EdoardoBerti We determined that Lollipop on the One mini 2 will not provide an optimal experience; it isn't scheduled to receive the update HTC (@htc) April 27, 2015 For those who aren't in the know, the One mini successor was announced by the Taiwanese company back in May last...
Source: http://www.gsmarena.com/htc_cancels_lollipop_update_for_one_mini_2-news-12127.php