No sorry this still remains as before. Apps are still sandboxed and can't read/write outside of their designated container, so they can't access information from another application if it does it will be rejected for 2.6 of the Apple review process.
2.6 Apps that read or write data outside its designated container area will be rejected
As a side note if you were working on jailbroken devices I believe the code from the accepted answer on here should work. Code below copied from link
BOOL callhistoryfileexist = FALSE;
NSFileManager *fileManager = [NSFileManager defaultManager];
callhistoryfileexist = [fileManager fileExistsAtPath:@"/private/var/wireless/Library/CallHistory/call_history.db"];
[fileManager release];
if(callhistoryfileexist) {
//copy it where you want it
}
I also just found a project on Github called SpyPhone that might be helpful but again I think this would be jailbroken devices only.
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