and what about for Drupal 10 ?

Here's a patch for the theme to get it D10 compatible. It fixes the info.yml, the rector suggestion from issue 3297725 → , the libraries.yml and the javascript which was using jquery.once() which is deprecated in D10 and replaced by a core alternative.
The only thing which is not possible to fix with a patch is the version constraint in the composer.json. I was able to bypass this by using the mglaman/composer-drupal-lenient composer plugin. Just install the plugin and add this in the extra section of your project composer.json:

"drupal-lenient": {
            "allowed-list": ["drupal/newsplus_lite"]
        }

Upgrade status will show everything is ready to go and for me the upgrade to D10 with this theme went without a problem.

Hi,

Would be nice to make the module installable on D10.

Very thanks