I gave in to temptation. I bought one. I couldn’t wait.
Browsing on the Sony PSP, the browser is identified as
Netscape 4.0 Mozilla/4.0 (PSP (PlayStation Portable); 2.00) (while it is the NetFront browser)
Javascript version 1.2
Monitor Resolution: 480 x 272
Color Depth: 32 bits
Tabbed (3x) browsing, but no Flash support, limited memory for browsing, no Ajax style webapps.
Update:
Sony PSP Media Manager
3.30 GB 1.5h movie into a 335MB AVC MP4 file, after 4.5 hours of encoding…