Alexa will soon let you post video sticky notes for housemates, control smart home devices with remote switches, check multi-view security cam feeds, and even create “captivating” stories based on suggestions from your kids. In what could be seen as privacy win, the company also announced a new feature called “Edge Extensions” coming to the fourth-generation Echo smart speaker and Echo 15 smart display. Amazon detailed those upcoming features and more during its big hardware reveal Wednesday, which also saw the e-tailer announcing that the Echo Show 15 will soon double as a Fire TV&sref=https:…