PennDot has a long term plan to expand I-376 from it's current designation (eastern suburbs of Monroeville/Plum/Penn Hills to Downtown) to go all the way to Pittsburgh Int'l Airport and re-designate parts of I-279 and PA-60 north all the way to I-76 in Mercer county. Recently, the first rounds of changes happened, by changing I-279 from Downtown to I-79 to I-376. What I find interesting is that the traffic.com products haven't been updated yet - but the flows on TWC have. Here's a screen shot from the New Ken Weatherscan. I'll get screen shots from the other STARs tomorrow.
In this picture - the I-79 route used to read "I-279/Parkway West to Bridgeville." You can see how it differs. The screen shots I'll post tomorrow have more substantial changes.