Microsoft has released Windows 10 Insider Preview Build 18845 for Insiders in the Skip Ahead ring. This 20H1 build is mostly bug fixes, but does include the finalized Emoji 12.0 emojis and Microsoft has associated keywords with them so you can search for particular ones. Microsoft continues to have issues with anti-cheat software for gamers that will cause Windows 10 to crash and display a Green Screen of Death (GSOD) This build also includes a fix for a Microsoft Edge bug that would cause it to crash on launch for some Insiders.
Source: https://www.bleepingcomputer.com/news/microsoft/microsoft-releases-windows-10-build-18845-20h1-with-emoji-120-and-fixes/