The HTC Butterfly 2 is a waterproofed One M8 with 13MP Duo Camera

The Butterfly 2 differs in essentially no ways from Japan's KDDI exclusive J Butterfly that we told you about back at the end of July, which makes it all the better. The new handset is styled around the One M8 (or the E8, if you will), but offers what happens to be both an appealing and unfortunate trade-offs. For one, the device forgoes the M8's signature all-aluminum body in favor of polycarbonate, but at the same time you're getting waterproofing (IP57) and a better, 13-megapixel Duo Camera (no UltraPixels here!).
Pricing remains unavailable, though that won't last long, for HTC is promising to make the Butterfly 2 available as early as September 2nd starting with Taiwan. The company is planning on distributing the device to major wireless carriers and retail partners in other countries in the South Asian region, too, including Hong Kong, India, Malaysia, Singapore, and Thailand. Currently, we don't know if the handset will make an appearance in the West, but rumors suggest it will.
source: HTC