Emojipedia:

Unicode this month released a draft update to TR-51, or in human terms, the document that describes what’s-what’s what in emoji standards.

This draft is for Unicode Emoji Version 4.0: an update to Unicode’s emoji documentation which can be released outside of the annual Unicode Standard release schedule.

Five notable additions:

• Gendered Emojis
• New Professional Emojis
• New Flags
• Emoji Upgrades to Non-Emoji Characters
• Additional Skin Tone Support

Read the original post for full details.