No, they were very vague using words such as "you'll be good to go" they never put right said it. It's all speculation. I think we'll drop to 20 but how well you do against enemies is based on your gear rather than your level. If you look at the leak of the first mission, when he selects it is says you gear has to be light level 20 (light level on your gear now just means the level of your gear, not tied to your actual level)