If I remember correctly it is connecting to the turnpike so Disney can more directly route people to Disney instead of all the rest of Orlando? Does anyone else have more information.
There's a new north south toll road that will run west of Disney, just east of Orange Lake Country Club resort on 192 (if you know where that is). This road connects to the turnpike (Florida's Turnpike) well northwest of Disney, to 192, and to I-4 somewhat south of Disney.
A Disney entrance from that toll road about 2 miles north of 192 goes north around Animal Kingdom and the other end is on Buena Vista near Coronado Springs or Blizzard Beach.