A:Answer From something I saw on their forum. There are 4-5 differences.
1) Supposed to support Apples Homekit, but as I understand it, it's not available yet but should be in near future. Anyway I'm not an Apple fan so no worries for me.
2) Improved night vision with advanced Sony sensor, so maybe night IR vision is improved.
3) Smart image enhancement for easier human identification, looks like they may of improved the AI
4) Repeater mode for increased signal range, any increase in range is always welcome.
5) 1080p live-streaming and recording, since the other camera had 1080P, not sure if this means during live streaming it can also record or what exactly. Not clear.