Luckily, as far as I can see, nothing has changed since the pre-release versions of Emoji 15, so the alpha version can be used directly.
The hyacinth emoji is now using the design from Noto Emoji, as is the llama emoji. Both have been color-adjusted.
Note: Due to misconfiguration, the EmojiCompat font did not support Emoji 15. The version downloadable here is updated, but the source version for this tag is not.