Today's update is courtesy of sdcfans88. These photos were taken from the back-porch of the Culinary Arts School. It looks like the crane is busy over in the area where they've already installed some track pieces.
Zooming in and peeking through the trees you can see that they have now installed track on that taller support that we saw in our last update. We can now assume that there are at least 3 pieces in place on what looks like a banked curve.
Over at the station, they continue to work on the siding and closing up the building.
The most interesting development since last weekend is this HUGE slab of concrete with rebar footers sticking up from it. We'll have to keep an eye on this to see what happens.