The Seattle Parks and Recreation Dept. along with the Mt. Baker Rowing Club have added grass areas in some parking area of the park, including one that's along the pit area during Seafair.
This will probably mean a slightly smaller footprint for the pits, which are already tight.

As Owen Blauman said: it looks like the pits are going to be smaller for the teams, but might make for some good golf putting areas during down times.