How a MATE LTS willbe supported

I am little bit confused with LTS supporting and update life cycle of MATE distribution.

There is some differences between those two images.

the second image has a typo, there is no support till 2030 (10 years from now).

Yes, the 2030 was my mistake, that's Ubuntu's Extended Security Maintenance (ESM). I got confused when reading the Ubuntu Wiki.

I described the reason when I committed the change -- these can be found in Recent Site Changes in the footer of the site.

Whoops! Regular Ubuntu currently says 2030 on the wiki:

Though 'ubuntu-support-status' would say 2025 (for Canonical packages)

However, being a flavour, community packages are only supported until 2023.

-- Correct EOL date for 20.04. · ubuntu-mate/ · GitHub