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
serious eff htc the craps i would rather use a blackberry classic.. Bye bye htc ios ftw
I pay 1750 dh for my HTC one mini 2 ,when i buy they said u can update to lollipop but now as per HTC no more android updates for my phone ........... i waste my money ............
Is any problem to root HTC one mini2