When to expect Linux 5.10 or 5.11 for RPi 4 preinstalled images

I was wondering if there is a publicly accessible roadmap for the Ubuntu Raspberry Pi preinstalled images or prepackaged kernels. The reason I am asking is because I want to try the Linux 5.10 (or one of the 5.11 RCs) kernel without having to resort to the mainline kernels.

Thanks in advance!