Samsung will soon announce which additional devices are eligible for the Jelly Bean update. As the world’s largest smartphone manufacturer, Samsung leads the Android community with best-in-class devices like the Galaxy S III, and is creating new device categories with products like the Galaxy Note. Samsung has delivered the most Nexus-branded lead OS devices and we are pleased that Google will be bringing Samsung Galaxy Nexus and Nexus S customers the first experiences of Jelly Bean on a handheld device.HTC
We are excited about Android Jelly Bean and are planning to support it across a variety of our devices. We are reviewing the software to determine our upgrade plans and schedule, so please stay tuned for more updates on specific device upgrade plans.Now of course these aren't exactly outright commitments to JB, but are just about as good.
In HTC's case, Google Now as well as Project Butter would be extremely beneficial to their One Series as they do lack a "Voice based assistant" to compete with the iPhone and Galaxy S III and well we all love a more responsive phone even when they were plenty fast in our experience (s).
While in Samsung's case, a whole lot of noise was made about S Voice and while reviews of it have been lukewarm at best, we aren't sure if Samsung is willing to chuck away all the resources they put into R&D for S Voice. Responsiveness increase from Project Butter would of course also be considered a plus.
Source: TechnoBuffalo, AndroidCentral