Wait, isn't it life plus 70 years? If so, the only Beatles music that would be public domain any time soon would be if there were songs by Stuart Sutcliffe...

Now, but until a few years ago some countries (Canada) only gave 50 years from publication. So the law was changed. Google the "mickey mouse copyright graph" to see what I mean. The US has repeatedly extended its copyright terms coincidentally in time to protect Disney assets.