Not true, it was pretty clear that he had Earth and Yin since part 1. Suiton should be a given too. Wind is the only one not expected from him
Orochimaru used wind to blast the forest in the chunin exam that sent Naruto flying away from Sasuke and Sakura where the snake ate him
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. So wind and earth were given. He also wanted to learn all jutsu's so learning to use other elements was probably something he did.