TikTok has started rolling out its Instagram rival, TikTok Notes, to select Android and iOS users “for download and limited testing in Australia and Canada.” A tweet announcing the launch, as well as the App Store and Google Play listings, showed off some official images of the app that offer insights about how it works for those of us who don’t have access yet. In them, we see that you can write up headlines for images above your captions, which is a feature Instagram doesn’t natively offer.Ima...