No.
The $17 billion can either mean $17 billion of new attractions, lands, hotels, etc.
Or, the $17 billion is the total spent on WDW, and if that's the case, we should expect ~$12 billion in WDW new lands, hotels, and attractions and ~$5 billion in maintenance if we assume 30% of the $17 billion goes towards maintenance.
To me, $12 billion makes the most sense with $5 billion in maintenance. Not because a smaller number makes more sense, but if you look at the needs by the parks, $12 billion honestly covers pretty much all of them, so realistically, the only way to get to $17 billion without maintenance is a new gate.