Dell's new phone lineup has leaked, and there are two OLED phones in there. They both have the same 4.1" WVGA touch OLED. Both are said to be released in Q4 2010 for 3G networks, with an LTE version coming towards the end of 2011.
The first phone is the Lightning which is a Windows 7 portrait slider, running on a 1Ghz processor. It sports a 5mp camera, GPS, GPS, accelerometer, compass, FM radio and full flash support.
The second phone is the Thunder. This is an Android 2.1 phone with a "heavily customized" Dell "Stage" UI, ties with Facebook and Twitter, has an integrated Hulu application and supports Flash 10.1.