From what I have found on the permits and reading on wdwmagic.
Toy Story construction should start very soon. While work is going on for that they will prepare wetlands for future work.
The yellow section is currently forest area but will not be that very soon, where they will be clearing, grubbing, and filling existing wetlands, ditches, and storm water ponds.
The areas marked W12.22 and W12.2A will become parking areas.
This work permit is scheduled for start in January 2016 and completion in October 2018. This does not of course mean everything will be done by October 2018 only things specified in the permit.
Nothing in the permits mentions parking garages but doesn't rule them out either. Martin Smith says he was told two low level garages are coming but its not "gospel".
http://www.wdwmagic.com/attractions...nsion-coming-to-disneys-hollywood-studios.htm