Someone on the AC forums has posted up some early photos of the upcoming OnePlus 2. A total of 10 photos show something very similar to the OnePlus One, but enough to be an upgrade. Build quality looks superb.
http://forums.androidcentral.com/general-news-discussion/559543-i-have-oneplus-2-exclsive-hands.html
http://forums.androidcentral.com/general-news-discussion/559543-i-have-oneplus-2-exclsive-hands.html