Can't honestly say I'm surprised by this. Most companies ditch support for older devices in favour of new ones. All we can hope is that the new range will have addressed some of the niggles of the older models - sadly not always the case. I'm still waiting for an update to the Replay software that I clearly demonstrated a bug in (Up and Down accelerometer displaying the wrong way around on accelerating / braking). And 'Parking Mode' is essentially unusable with this camera, and never adequately fixed by what should be a simple software patch. For my next purchase, I'm going to see what other options are available.
Regarding capacitors / batteries in these devices, it seems to me that most of the manufacturers are missing a very obvious solution. Just put the battery / capacitor in the cigar lighter adapter, rather than the camera. Easy to add much bigger capacity power store without adding bulk to the camera, and also using much cheaper components within the adapter (no need for them to be miniature)….. sincerely it beats me that no one has thought of doing this...