The HTC Bolt is exclusive to Sprint in the US - fittingly, the carrier brought in famous sprinter Usain Bolt to do the promotion. We keep hearing that the same hardware will launch outside the US, but it will carry a different name. First @evleaks suggested the HTC 10 evo name and now @LlabTooFer, another reliable leakster, confirms the name. He also narrows down the "worldwide launch" to an EMEA one, meaning some regions may miss out on HTC's new 5.5" flagship. How much will they miss? You can check out our hands-on impressions for an early look at the HTC Bolt/10 evo. Source
Source: http://www.gsmarena.com/htc_bolt_to_launch_as_10_evo_another_leakster_confirms-news-21615.php
