This article has a good summary about the history, common problems and some fixes.

This is interesting, WordPress 7.1 will include a theme framework with CSS variables. It will be available for plugins to use for creating a consistent UI.

I think this was pulled from a previous release but maybe back on again for 7.1. The details here for block developers.

An interview with Rob Ruiz, who is the WP Rig developer. WP Rig is a flexible starter framework for WordPress theme development.

Rob Ruiz and Ryan Welcher take a look at the WP Rig starter theme for WordPress.

This is a nice overview of the theme.json file, though it doesn’t go into depth.

Here is a nice interview with Rob Ruiz. Rob took over the maintenance and development of the WP Rig theme. In the interview he talks about his background, how he came to be in charge of the WP Rig project, and how it has evolved.

WordPress 7.0 will require all blocks to be at Version 3 in block.json. This is coming very soon, so Ronald Huereca updated his guide on Version 3, along with a few examples of how to resolve third-party script issues. If you’re a block developer, now is the time to opt in and test your blocks.

WordPress 6.9 will include the Abilities API that looks to be a big feature for developers. This article by Roger Montti does a good job of explaining what it is and its advantages. It is worth a read even if you aren’t a developer as I imagine it will be widely implemented.