Actually we do know. If you look closely, his "hawkeye" outfit is literally just his ronin outfit without the shoulders and top tunic. He also removes the the bracers and switches gloves. But the boots and chest strap is the same. Obviously he removes the hood and mask.
So the answer to your question is yes. Just a stripped down version for his second look. With the added... Mini crossbow on his left wrist apparently
Ronin
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Simplified Hawkeye
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The question is will hot toys give us one figure that we ourselves can either strip down or add on for 2 seperate looks and have a Hawkeye or Ronin. or whether they will make two separate figures, or just skip hawkeye and just make Ronin