From what I understand, most of the potential lost units are coming from the proposed footprints of Kaiser and the soccer stadium. Hopefully the densities of the remaining residential zones aren't changing.
Staff report for Planning and Design Commission next Thursday here:
http://sacramento.granicus.com/MetaV...meta_id=449368
Also, what bothers me a bit is the loss of the 10th connection and the street grid that the box car parks would have provided. If anyone's driven out that way on 7th street, you've gone through the old elevated rail line, which was going to be leveled so it didn't form a barrier between the Railyards and River District...now it seems like it's staying. Would be a shame to have a wall between these two redeveloping areas.
If you care about this development, tell the Commissioners and City Council. The more voices heard, the better.