This is a fantastic development. What are the chances of any of this applying retroactively to papers that are already published?
I don't think they could. If they've already signed a contract to fund a project, they can't just decide to change the rules. This will only count going forward.
http://www.xconomy.com/san-francisco/2013/01/15/california-t...
http://tech.fortune.cnn.com/2013/02/21/the-california-tax-th...
After 1996 you could presumably take it as read that digital rights were included when you transferred copyrights.