I cannot use {% content_for 'blocks' %} in my section.

<div class="container">
    {% content_for 'blocks' %}
</div>

{% schema %}
{
    "name": "Section",
    "blocks": [
        {
            "type": "@theme" 
        }
    ]
}
{% endschema %}

Here is my section code.
In the Shopify Theme CLI, I am getting a ‘Liquid syntax error (line ?): Unknown tag “content_for ‘blocks’”’ error, which prevents me from using {% content_for ‘blocks’ %}. The theme/blocks directory also exists. I do not know why this is happening.

Are you using a store that has the Flex Sections developer preview enabled?

Oh… Thank you, that explains why it’s not working. So, besides gaining access, the only way to use it in a store that doesn’t have the developer preview enabled is to wait for Shopify’s update. Is the update plan still undetermined?

There is no concrete date planned right now, but the latest info can be found in this blog post https://www.shopify.com/partners/blog/stylesettings

Thank you!