We have talked about this subject recently, but I don't think this means anything. Ben Simmons seems like an obvious lock for a max extension while Denver probably was a little too eager to give one out so soon (not that they wouldn't have done it, but it paints a bad picture for Brown/The Cs).
Even without any improvement, some desperate team will likely sign Brown to a max offer sheet next offseason forcing Danny to match. I would prefer to get him locked up this offseason at somewhere between $20M to even $25M/yr, but not at the max. Some people have said this might paint a bad picture ultimately leading to Brown's departure, but I think you have to be absolutely sure before handing him $170M.
This could also mean Danny is working on a trade, but, unless Smart or Hayward are also included, we are looking at other rookie contract players.