Some interesting projections about jobs growth in the area in 2015:
http://www.trwib.org/admin/uploads/IndustryGrowthProjection_Report_2015.pdf
The projected lead sectors, industries, clusters, and occupations actually seem pretty diverse to me--lots of different familiar threads there (increasing health care services, tourism and entertainment stuff, professional-services-center stuff, tech stuff, business management stuff, mining, and so on). The predicted distribution of new jobs by wages was also interesting--as they note, the model suggests strongest growth in both the lowest and highest wage categories, although when you add up all the middle wage categories that is still significant too overall. I haven't seen projections like that before so I am not sure what is normal, but it seems to me that is likely consistent with a continuation of the recent trend of Pittsburgh experiencing stronger wage growth rates than the U.S. metropolitan portion as a whole.
Anyway, all this continues to suggest to me that while there is plenty of support for having lots of higher-end new housing in the pipeline, we do in fact need to be making sure there is enough affordable housing available as well.