Tron Ares Theories is Sark Coming back for Tron 4?

So if you watched Tron Ares and you saw the credits screen, then You know that Sark appears at the end. But is this setting up the new villan for Tron 4. Does this mean that orignal Master Control Program is coming back as well? I think orignal MCP will team up with Sark. And we all know only Tron can defeat Sark. So is this the way they will reitroduce Tron into the movies. What do you think are you excited about Tron 4 and the return of Sark?

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