HTC has confirmed that HTC Sense 5.5 will be available for the One, One Mini, Butterfly, and Butterfly S. Earlier today, HTC announced the HTC One Max, which will have Sense 5.5 pre-installed.
HTC will be receiving the update sometime in the near future, but we do not know the exact date.
The HTC Sense 5.5 user interface includes changes to HTC BlinkFeed, which has Google+, Instagram, and RSS feed integration. The Sense 5.5 also has an offline reading mode and multi-edition mode that lets you read news in other languages. The HTC Zoe will have the ability to automatically put together a slideshow with background music.