There are some rumors about a new PMP from Cowon named J3! The Cowon J3 feature a 3.3 inch AMOLED Display with an WQVGA resolution (480x272 pixels). There are some rumors that the J3 does have also WIFI.

Other specs already known are the choice of 4GB, 8GB, and 16GB storage capacities and the in-built DMB tuner.
Source

Viliv debuts there P3 an portable media player with an 3.7 inch Amoled touchscreen at CES-2010.

The P3 does have a dual boot Windows CE and Android function. More details at CES-2010.

Source

Sony Japan introduce a update to the A-Series Walkman series. The new NW-840 walkman series comes with an 2.8 inch Am-OLED Display. The resolution of the AMOLED is WQVGA (240×400 Pixel)Thanks to the OLED Screen the A-Series is the thinnest walkman which only 7.2 mm thick.

Microsoft is officially announcing the Zune HD Release date is September 15th, but the 16/32GB Zune HD can be pre-ordered today.

The Microsoft Zune-HD features:

Microsoft AMOLED touch screen. Allows you to easily flip through music, movies and other content. The 3.3-inch glass screen and 16:9 widescreen format display (480x272 resolution) offer a premium viewing experience.

Amazon has launched a pre-orde Web page for the Microsoft Zune HD with a 3.3 inch AMOLED Display. At this website we will see the 16GB model for 220$ and the 32 GB version for 290$. At the moment pre order is not ready because it returns an website not found error.
via Amazon.com

The long awaited Cowon S9 curve is now available at Amazon.com
for 239.99 Dollars.

The Cowon S9 starts in Europa and US this day, now we have the first review of Cowons AMOLED Portable Media player S9.

Featuring one of the world’s first 16.9 million colour AMOLED screens on a portable media player, the S9 exudes radiant, rich, lifelike imagery with a virtually limitless viewing angle. The 3.3” ultra high resolution widescreen display makes flicking through album art, checking out your latest photos or watching a film instantly engrossing. With an ultra fast refresh rate, the latest blockbuster is
displayed in your hands with unsurpassed realism.

Featuring one of the world’s first 16.9 million colour AMOLED screens on a portable media player, the S9 exudes radiant, rich, lifelike imagery with a virtually limitless viewing angle.