The marsh islands by 520 are staying open! We’ve checked on the Washington site.
The Washington government site has actually taken many pics and judging from the amount of serious photographers out the day we went, there is a LOT of documentation of this project.
Here is the preferred design from 2010 and it’s hard to tell if most of the design has been implemented.
Here is the most recent from late 2014 which seems to show (around 4:20…wait is that a joke?) that the marsh islands are going to stay if you look to the left around that time.