Is there a Ubuntu Mate for Raspberry Pi 4?

@Hal58 wrote:

I just completed porting a Ubuntu-MATE 18.04 from a Pi-3B+ to a Pi 4 (originally Pi 2 w/16.04 upgraded to Pi 3 with 18.04 then Pi 3B+). Here are the steps I used (condensed):

1. If you have an old 18.04 installation on a Pi3 (or 3B+), save it and prepare a new micro-SD card with the latest Raspbian Buster install.
2. Using some local storage (flash drive, external HD, or another computer's drive by reading the SD card) copy the following from the Buster install to the storage:
   1)The entire Raspian /boot partition (I 'tar'ed it to local storage), 2) the contents of /rootfs/lib/modules (to get the kernel modules for the kernel version in the /boot partition)

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