update release notes

src/6.6/6.6.10.0.md

@@ -37,6 +37,8 @@ shopware:
 * Besides the existing PDF document which is based on DOMPDF, we added our standard document as HTML documents which are fullfilling the A11y criteria.
 
 ### Introduce global template data for language and navigation
+Some of the data for the twig template in the Storefront, like the current currency or navigation ID, should not be depending on the current page object, instead, should be available globally and independent. The following changes facilitate the introduction of those global template data:
+
 * Added new Twig function sw_breadcrumb_full_by_id to get the full breadcrumb for a category ID.
 * Added \Shopware\Storefront\Framework\Twig\NavigationInfo to the global shopware Twig variable, to provide the ID of the main navigation and the current navigation path as ID list.
 * Added minSearchLength to the global shopware Twig variable, which defines the minimum search term length.