I have just checked and I may be confused - I have been reading so much on these two phones over the last couple of days, I can't remember what I read where !
It appears that there was an issues with the HTC One X losing touch sensitivity. Looks like the new HTC One may be OK - why didn't HTC come up with a different name, makes it so hard to search !!
I think if you use the model name M7 in your searches a lot of people are using this to try and stand out from the old models. Did a search for HTC ONE M7 on Amazon to find my current case