The new caption stickers covert audio into captions so users can enjoy Reels videos without audio.
Captions are already a part of Stories and are seeing wider implementation.
Reels initially started as 15-second videos.

The length was quickly extended to 30 seconds less than a month later.
Reels and Stories have changed the scope of Instagram as the company changes fit.
Its unknown what other new features Instagram has planned for the future.
Will Instagram continue taking cues from TikTok or add something original?
It’s not unreasonable to expect Instagram will continue to implement new features to compete with these TikTok additions.