I'm posting this here as I work in both WordPress and Joomla and this question applies equally to both. In this case I'm starting a new WordPress project and trying to pick a theme. I'm inclined to pick a theme that uses Gantry 5 because that's the latest most modern version. However, I like a theme that uses Gantry 4. Does it matter which I choose and what is the future for Gantry 4?
Also, would I be correct in assuming that a Joomla template or WordPress theme developed for a particular version of Gantry can only be used with that version of Gantry? Asked another way...if I develop a site with a template or theme that is originally built for Gantry 4 then I cannot update the site to Gantry 5 and expect that template or theme to work?