HEIC (High-Efficiency Image Format), HEIF (High-Efficiency Image File Format), and HEVC (High-Efficiency Video Coding) are all part of the new generation of file formats that provide better compression and quality compared to their predecessors. Here are a few reasons to add support for these formats into Rock:

1. Better compression: HEIC and HEVC use advanced compression techniques to reduce the size of images and videos without sacrificing quality. This means that the overall storage space needed for ideas could be reduced, saving on storage costs.
2. Improved quality: HEIC and HEVC also offer improved color accuracy and detail retention compared to older formats.
   
3. Better user experience: Mobile users expect fast load times and smooth playback when accessing media online. HEIC and HEVC can help reduce load times and buffering, improving the overall user experience. By adding support for these formats, Rock could more easily accept image uploads like profile pictures from the user's mobile device.
   
4. Increasing popularity: HEIC and HEVC are becoming increasingly popular, especially among mobile device users. iPhone made the HEIC file format its default format starting in iOS 15. As more people use mobile devices to access websites and web applications, supporting their preferred file formats is essential. According to a report by StatCounter, mobile devices accounted for 55.73% of website visits worldwide in January 2023, compared to just 44.27% for desktop devices.
5. Future-proofing: HEIC and HEVC are newer file formats that will likely become more prevalent. By adding support for these formats now, you can future-proof your application and ensure that it remains relevant and helpful to users in the future.

Supporting HEIC, HEIF, and HEVC file formats in Rock can provide significant benefits for mobile users; additionally, with the increasing popularity of mobile devices, it's essential to support the file formats that users prefer to stay competitive and relevant.