Jeremy Burge of Emojipedia has information about new emojis in the latest iOS 14.5 beta:
💉 Syringe isn’t a new emoji, but it does have one change in the forthcoming update from Apple: the blood is removed. This makes the emoji more versatile when used to describe COVID-19 vaccination.
A bunch of other new changes are also rolled in, including emojis for more people with beards, couples with a mix of skin tones, and an image of AirPods Max replacing the more Beats-inspired over-ear headphones in the Headphone emoji.
iOS 14.5 will probably be released to the general public in March; you can sign up to the public-beta train to get it now, but you risk bugs and your friends won’t be able to see the new emojis until they also update their devices.