Samsung Mobile Displays announced a new AMOLED panel, with WVGA (800x480) resolution at 300 PPI. SMD says that the new panel will be shipping in 2009.

SMD claims the new AMOLED has 4 times the clarity of their current displays and has a 40% increase in power efficiency (although it's not clear, they might mean 40% decrease in power consumption compared to an LCD panel...).
Here's the original news in Korean.
Posted: Jun 01,2009 by Ron Mertens