Starting with Telegram 4.5, whenever you send multiple photos or videos they are grouped into albums. Each album can include up to 10 photos or videos, arranged in the chat as elegantly proportioned thumbnails. They will also result in one notification instead of ten on the recipient’s side.
With version 4.7 for iOS, you can change what your Telegram looks like in the new Appearance settings. Choose between four different themes, including a minimalistic one (“Day”) and two dark themes (“Night” and “Night Blue”). The “Day” theme also allows you to pick an accent color for the entire app, like pink or purple.