CQ eCommerce installation

As reading the article - eCommerce Integration Framework http://dev.day.com/docs/en/cq/current/ecommerce/eCommerce-framework.html, I have some questions regarding obtain the installations.

1. The integration seems based on CQ5.5, how can i upgrade CQ5.4 to 5.5?
2. How can I get the packages
   1. cq-commerce-content-5.5.2
   2. cq-hybris-content-5.5.0
   3. cq-hybris-server-5.5.0
3. Could you confirm the integration has been implemented on Hybris 4.5? do we have delivered the latest released packages against to the latest Hybris released version 4.7?

thanks in advance!