Greek technology site iPhone Hellas has been combing the text strings in the recent beta of Apple's iPhone 2.0 firmware. As we've seen in the past, the text strings refer to unannounced iPhone features and also mention extra steps included to prevent unlocking.
Strings were found containing "A2DP" and "HeadphoneBT" implying stereo Bluetooth and possibly a Bluetooth remote control feature. Strings for "RoleGps," "RoleRemote," and "RoleA2DP" allude to potential GPS navigation funtions. There's a "Printers" directory in the /Library and a new "YouTubePlugIn.webplugin" string presumably for the Safari browser. A "Google411" text string may reference Google Maps and local directory services.
Finally, the ominous sounding "BRICKED_AND_SIM_LOCKED_STRING" implies that Apple is taking further steps to prevent unlocking.
The final version of the iPhone 2.0 firmware is due in June 2008.