Prestashop became so complex that the changes will be deployed step by step in Prestashop 1.7 and following version. You will notice that this is not Prestashop 2.x.
The first area the developers are look at is the admin area. The product page will be the restructured and consolidated. The number of tabs will be reduced to 6 . The module list will be updated as well. Today, the update mechanism looks poor as all the updates available are just listed above the list and pushing them into your actual shop might introduced few incompatibility depending on your store version. The whole experience could be improved though. It also probably means even more integration with Prestashop marketplace: I will not be surprised if they don’t make their own modules together with their partners’ modules more visible. They could also introduce more restrictions on module like SEO Manager that are not sold on Prestashop addons. Wait and see.
You may have come across Prestashop issues dealing with Smarty –the current Prestashop template engine. Out Smarty, welcome Twig – symphony template engine. For the time being both engines will work alongside of each other.