Hubsan announced it's new models for their mini quadcopter product range, one of them is H107D+. It's announced on January,however; it is not fully available neither online or on site, not even a curtain release date. Currently only a UK Company sells it online and on site. I got mine from their Peterborough store with price tag 169 GBP.
Unlike H107D, D+ has a different control mechanism. Throttle stick is centered just like Aileron/Elevator stick. To fly it you first arm it with a stick configuration than you raise the Throttle more than %50 percent. As soon as you release the Throttle stick it tries to hold it's altitude. As an Engineer i could not stop my self to open and see the electronics inside. From the photos above it has a outstanding build quality. As you can guess barometric pressure sensor is covered with foam to read more accurate pressure sensing.
I had i couple of flights with it both indoors and outdoors. Battery lasts ~6 Min,which you charge it via usb on quad.It has a special battery and battery compartment, no more plugging cables. I like this compact military design. Indoor flights are not as perfect as 107D or X4 because alt. hold mode can't hold the altitude rock steady, it oscillates within 20cm up and down at a low frequency to manage it's altitude . On outdoors, it's much more stable and fun to fly. Video feed range is very good, it can hover in a point where you can barely see it without loosing transmission.
You can start stop video recording and take photos from TX. Video quality is good day/night (with 720P resolution).My overall opinion on D+ is it requires firmware update to fly much more stable and solve rare bugs, i hope that usb connector build this in mind.