Reference
Emoji versions and what new means
A new emoji is approved before it is available. The gap between the specification, the data set and the device font is why release dates can feel inconsistent.
Two version numbers
Unicode publishes character versions, while the Emoji subcommittee publishes Emoji versions. An emoji page lists the Emoji version because it is the more useful number for release history.
Specification is not support
Approval means the character and its name are defined. A device still needs a font with artwork for that character. Older systems may show a blank box, a monochrome glyph or a fallback image.
Check the target platform
If an emoji is essential to a message, include a text fallback or a short label. Do not assume every reader sees the newest character.
The New label
EmojiBase marks entries from the current data version. The label means the character is new in the data set, not that every platform has already added artwork.