The Travis Central Appraisal District (TCAD) produced a document that outlines the new methodology being used in Steiner Ranch.  You can access it here.  The map that TCAD created is available here.  You need to blow it up a bit to get a good look at it.  There is no legend to determine the exact land classification for each color.  The stars indicate a sale used in their analysis.

For background information, read the blog entries from May 13, May 16, and June 1.