Here's the video record of the CFX board meeting with the Brightline presentation:
The Brightline presentation starts at 6:00.
The Brightline VP stated quite strongly that they are intercity rail, not local rail, that they will have hourly service, and that they are not suited for local transit. He said that one proposal cannot meet all the transportation needs of the community. Sounds like Brightline is not interested in shuttling people between MCO & WDW.
The route along SR-417 is the "preferred alignment," but the alternate alignment along SR-528 has not been completely ruled out, and is still being pushed by one of the CFX Board members. Brightline's estimate is that the 528 alignment would be double the cost of the 417 alignment, a difference of more than $1 billion. He said they would require a source of outside (government) funding to make it viable.
The segment to Disney is in the 15-30% design phase, and will be built next (if all approvals are obtained), with service expected in the latter half of 2026, as stated earlier. The rest of the route to Tampa is still in the early design stage, and will not be in service until at least 2028 or 2029.