The HTC One (http://www.gsmarena.com/htc_one-5313.php) is finally starting to gain traction and rumor has it the company will bring a couple more devices based on it, the HTC Butterfly S and the HTC One mini (M4).
The Butterfly S is a slight upgrade over the current Butterfly (http://www.gsmarena.com/htc_butterfly-5118.php) with the same 5" 1080p screen, but an UltraPixel camera and higher capacity battery, which reportedly makes the device thicker than the One.
(http://cdn.gsmarena.com/vv/newsimg/13/06/htc-butterfly-s-one-mini/gsmarena_001.jpg)
The HTC Butterfly S is also rumored to have a microSD card slot and will presumably use a newer Snapdragon chipset. It's expected in late June.
The HTC One mini (M4) is a Galaxy S4 mini competitor with 4.3" 720p screen, dual-core processor, 2GB of RAM and an UltraPixel camera. It will have stereo speakers on the front and run Android 4.2 with Sense 5.
(http://cdn.gsmarena.com/vv/newsimg/13/05/htc-m4-leak/gsmarena_001.jpg)
The One mini is targeted for a mid-July launch. Previous rumors (http://www.gsmarena.com/htc_m4_surfaces_looks_like_a_midrange_variant_of_the_htc_one-news-5952.php) give it 16GB of storage, Beats Audio 1,700mAh battery and LTE connectivity.
As for the regular HTC One, it is expected to receive two new color options (http://www.gsmarena.com/htc_one_to_be_available_in_red_and_blue_versions_-news-6116.php) - Red in mid-July and Blue later on.
Source (http://www.eprice.com.tw/mobile/talk/4542/4869439/1/) (in Taiwanese) | Via (http://www.gforgames.com/gadgets/htc-m4-one-mini-butterfly-s-red-blue-htc-one-release-date-specs-36104/)
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