Look here (sorry, article in german, i'm referring to the sgh-d410). The article doesn't mention the os, but the screen res of 176x220 and the appearence of the phone somehow make me believe it's series60. Anyone got more info on this?
edit: Link to autotranslation - some stats from the article:
Screenres 176x220
Swivelling cam with vga res
18bit color display (up to 260.000 colors)
triband
poly ringers (64 voices)
mms support
midp 2.0 support (interesting!!!)
pop3+imap4 email client
gprs multislot class 8 (send 13,4 kbps, receive 53,6 kbps)
bluetooth and irda unconfirmed
no details on size or weight