I have a current model 11.6" Air purchased in January, and Xcode was pre-installed into /Developer. This was a stock machine: walked into Apple Store to buy it

I have a current model 11.6" Air purchased in January, and Xcode was pre-installed into /Developer. This was a stock machine: walked into Apple Store to buy it. (No special factory config) Compiling SBCL and a few items from MacPorts worked fine, so everything seems consistent with what I've seen on other Macs since 2005.