Pioneer is closing their plasma factories and is going to start using Panasonic glass. I'm unsure of the date however. Truely a sad day (not that Panasonic glass is anything to sneeze at either...)
I keep seeing this FUD posted around here and there.
Pioneer's first-gen Kuro is on the trailing end of the 8G model year. Pioneer is manufacturing the glass for their next model year, the 9G Kuro.
Panasonic will manufacture the 10G Kuro panels in their own plants, but they will be built to Pioneer specs. This is a FAR cry from Pioneer using Panasonic glass.
There is a really decent chance that this will enhance Pioneer panels by allowing them to keep the quality high while they reduce costs significantly enough to be more price competitive.
I don't see anyone complaining that Samsung manufacturers the glass for Sony's current LCDs.