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They are starting to cover the lake for the first stage which is supposed to open this year.
Based on this it looks like the first park at Vidanta World will be named "Epik Dream Park":
Source: https://www.facebook.com/maximilliano.maexisse/posts/10209177526672091
Ten minutes into this video you can see some new renderings of Vidanta World but of course who knows if this will end up being the actual design or not: