The white belt extends up to the concession that the 410 ends at I believe, so I think that's 4km further north if I remember correctly.
It's interesting to watch Brampton use as much white belt as it can while Markham is purposefully leaving significant portions of the white belt out of their future urban boundaries..
Very good point. Then again, Markham also has an RT corridor and a whole new downtown to grow along/in. Brampton has more or less a historic downtown with a few potential development sites. They don't really have the same type of focal point for higher density development like Markham or Richmond Hill or Vaughan or Mississauga.
If Brampton really wanted one, IMO the best site would be a redevelopment of Shoppers World and a few surrounding sites. With the Hurontario LRT and enhanced Zum service on Steeles (perhaps even a Rapidway type of design), that could be a great new node.