WMB announced plans to open a PDH facility in Alberta. If all goes as planned, it will open in 2016. I just scanned the news release, and it looks like the same technology that PDH uses. With EPD's plan to open 1 or 2 PDH facilities starting in 2015 and now WMB's announcement, I guess industry people think the propane glut isn't going away any time soon.
So maybe PDH has some competition in a few years, but for now I view these announcements as major positivesa for PDH.