I'm not remotely an anthropologist, but my very-simple take on this is that it has no impact on the out-of-africa hypothesis which happened relatively recently (~60k years ago) -- this just suggests that ~7mm years ago, earlier human hominids were found in Europe.
(think, maybe Lucy's ancestors came from Bulgaria. or had a dead family tree which lived in Bulgaria.)
Rather than disputing the out of Africa theory, it seems to propose an earlier "into africa" stage. It may lend some credence to the multi-regional hypothesis though.
(think, maybe Lucy's ancestors came from Bulgaria. or had a dead family tree which lived in Bulgaria.)