We understand that you may be concerned when you see "Your theme (BLK Black Label) contains outdated copies of some WooCommerce template files." message but this message is nothing to worry about as long as you're using the newest version of the theme.
WooCommerce updates their templates slightly almost every major and minor release but we don't re-upload the theme to ThemeForest every time they make a small change (because we don't want to bother everyone with update notifications when the updates are unimportant) so you may occasionally see this message.
You can download the newest development version of the theme from the GIT repository if you don't want to see this message.