YouTube for iOS has been updated with support for overlays with suggestions for what to watch next. These banners come up from the bottom of the video that you are currently watching, suggesting a video for you to watch after your current video is done. Suggestions can be dismissed with a tap of the 'x' button on the right side of the banner. It does not happen automatically, and content providers will need to implement the feature for the banners to appear on their videos.
This update also contains closed captions for live videos along with the usual stability improvements and bug fixes.