Samsung did with the GS7. Sure, they had larger batteries I'm different devices, but they dropped a much larger battery in the new device compared to last year's model.
That said, I adore HTC. They were my introduction to Android with the HTC Aria. However, no flagship I've seen this year has me interested in leaving my Nexus 6P.
Who know, maybe HTC will announce a surprise device with a great camera, USB-C, 3,200+ mah battery, 5.2-5.5 screen, 3+ GB memory, 32 GB+ internal storage, if there must be an SD card slot it should be adoptable storage only, fingerprint scanner on the back or power button, on-screen controls only, and a good speaker(s). But, that's my preference.
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