Great update aalalawi2! The developer's website has also added new renderings of the project:
Sources: http://asaas.om/en/projects/the-national-leisure-tourism-destination/theme-park/ and http://asaas.om/en/projects/the-national-leisure-tourism-destination/water-park/ and http://asaas.om/en/projects/the-national-leisure-tourism-destination/retail-dining-entertainment/ and http://asaas.om/en/projects/the-national-leisure-tourism-destination/