This is an odd bit of news. According to a Tweet from Jeff Gordon — senior PR manager at HTC, the company seems to have no intention to sell the 64GB version of their new HTC 10 flagship in the United States. Gordon didn't specifically rule it out, but in reference to a question about the 64GB version, his response was that the 32GB version will be available in the States.
You can see the content of the tweet in the thread above, and here is a link to the source: Jeff Gordon (@urbanstrata) | Twitter.
Speculation here at HQ is that HTC can only afford to offer the 64GB version in select markets due to manufacturing costs. We are still surprised that the US is not one of the more lucrative markets for the larger storage size, but perhaps it's because Americans tend to use more cloud storage. What do you folks think?
Here's our dedicated HTC 10 section for further discussion: HTC 10 (Formerly the HTC One M10)