All Themes available in the Shopify Theme Store are 2.0 Themes. You can search for the name of your theme on the Theme Store to confirm if it is a Shopify 2.0 theme. 

If you've changed the name of your theme, you can access your theme in Shopify to confirm that you use a Shopify 2.0 theme:

1. Log in to your Shopify admin and select Themes. 
2. Select Customize on your published theme. 
3. Click Home page from the drop-down menu at the top of the page, select Products, and then select Default Product.
4. Confirm sections are available on the left-hand side. If sections are available, you are using a 2.0 theme. 

Consider upgrading to a Shopify 2.0 theme if you are using an older theme to improve performance and to take advantage of new features, both from Shopify and Recharge.