Tesla continues to make Smart Summon changes to the app as it prepares to release Tesla Vision version of Smart Summon.
According to details found by @Tesla_App_iOS, Tesla makes several references to "Summon Sentry Cam" and "RTT," hinting at a possible live video feed for when using the new Summon feature.
RTT in this case appears to refer to "Round Trip Time," which is a way to determine the latency of a live video feed.
Being able to view a video feed of the car while Summon is activated makes a lot of sense, as you need to keep a close eye on the vehicle as it navigates the surrounding environment. Given the "Sentry" part in the name, the video feed could look a lot like the live video that's available in the app when Sentry Mode is active, specifically the tile view that shows you four video feeds at once.
The new Summon is expected to be included in an upcoming version of FSD first. It's not included in FSD v12.4.1, so it may make its first appearance in FSD v12.5 or 12.6 later this year.