HTC has just started to roll-out a minor firmware update for the HTC One, which already hit France. According to the provided information, the v2.24.401.8 update, which only is 32 MB small, is said to add compatibility for the upcoming HTC Mini+ remote control as well as the original Google Android keyboard, which is available from the Android Google Play market as a free download. If HTC has now started to roll-out a minor firmware update, which contains support for the HTC Mini+, it shouldn't take too long anymore to see it released in Europe, even if HTC has yet not officially announced it but all we have is the::unwired's earlier observation of a software update as well as Clove's later blog post of the expected launch.
Tests on German HTC One and HTC One mini haven't shown the availability of the above mentioned firmware update, therefore it can be expected that it is another by country staged software roll-out, as it is typical nowadays.
Cheers ~ Arne