not to add fuel to the fire, but as a quick side note, PennConnects has updated their website and "Phase I / Phase II" plans -- Phase II (2011-2015) specifically mentions the Walnut side of Cira South:
http://www.pennconnects.upenn.edu/find_a_project/phases/phase_II_overview.php
Phase 2 Projects
New Construction
1. Penn Presbyterian hospital Expansion
2. Residential Development at 3939 and 4001 Chestnut
3. 34th and Chestnut Mixed Use
4. Golkin Hall
5. New College House at Hill Square
6. Singh Center for Nanotechnology
7. CIRA South Walnut Mixed Use
8. Steinberg Hall-Dietrich Hall West Addition
9. Barker Transp lant House
10. 40th and Pine Residential Development
11. Neural – Behavioral Sciences
12. PA Hall site Redevelopment
13. Translational Research Center FITOUT
14. PCAM South Pavilion
15. Mod 7 Chiller Expansion
16. Data Center