Updated 30th Dec, 2016 - Looks like Shopify have been busy and brought back another 3 free Shopify themes with sections now enabled. The updated themes include Pop, Simple and Supply.
You may have noticed some changes have been happening on the Shopify Theme store. Specifically surrounding the introduction of Section capabilities that have now been added to themes. So with these changes we have updated our free Shopify theme comparison matrix to make it easier to see what capabilities are provided by each theme.