It's in the title. Currently if the view requests Image.prefetch and then unmounts, there's no way (at least, that I am aware of) to notify the prefetch request that it is not needed anymore. This might not look like an issue, but if this happens hundreds of times in a row (e.g. via scrolling), it becomes too resource-intensive for a mobile app. So I think it is important. Just a personal preference, but something between the lines of useEffect(() => { const controller = new AbortController(); Image.prefetch(url, "memory-disk", controller.signal); return () => controller.abort(); }, [url]); would be nice.