Acer officially announced the smartphone stream with an 3.7 inch AMOLED with WVGA resolution.
The stream comes with Android 2.1 and sporting a respectable 1GHz Qualcomm Snapdragon processor, this phone will have 512MB of RAM and an impressive 2GB of onboard storage.
Acer about the AMOLED Display:
Superb display quality: the touch screen with Amoled technology boasts 1.67 million exceptionally bright colors, through a generous 3.7” WVGA display. Furthermore, its incredible contrast (superior 2000:1) makes for clear images and perfect legibility in any environment and light condition. Moreover, this type of display consumes less energy to help increase battery life.

Technical Details Acer Stream

•5 megapixel camera
•3.7 inch WVGA AMOLED screen
•720p HD video recording
•HDMI out
•11.2mm thick
•Custom UI, described as “stunningly fluid”
•three types of predictive keyboards
•smart dialer
•redesigned contacts list (they are not specific as to how)
•2000:1 contrast ratio
Source:talkandroid