Is there Minecraft crossplay?

I saw a trailer today, where it said that there's crossplay at minecraft. Is it out now? And how does it work?

There's the Bedrock Edition, which is usually included as code with the Java Edition and with this version you can then play together with Mobile, XBox, Switch and, more recently, with PS4 on servers. But with the Java Edition you can't have crossplay

A code for the Windows 10 edition of Minecraft has not been available with the Java version since October 19, 2018, moreover, this only allows playing on a Windows 10 computer, all other versions of Bedrock each have to be extra be bought.