Linus Torvalds announced the Linux Kernel 5.11 after seven weeks in development and available for general usage with new features, improvements, and better hardware support.
As per Linus Torvalds for Kernel 5.11
This tutorial will be helpful for beginners to install kernel 5.11 in Ubuntu 20.04 LTS, Ubuntu 20.10, Ubuntu 18.04 LTS, and LinuxMint 20.1
Linux Kernel 5.11 is not a Long Term Support (LTS) branch, if you need support to any specific hardware you can go ahead and install the Kernel 5.11 version. otherwise, users are requested to be in Linux Kernel 5.10 LTS
How to Install Linux Kernel 5.11 in Ubuntu / Linux Mint?
Step 1: Update the system before proceeding to install kernel 5.11
Step 2: Download the mainline kernel packages for Kernel 5.11 from the Ubuntu kernel Mainline page or use the below commands.
For 64 bit systems
Step 3: Install the Deb files
Step 4:Reboot and Validate
Once the installation succeeded , reboot the system and verify the newly installed kernel by using the below commands.