The official text has been published:
http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2011:265:0001:0005:EN:PDFThe section dealing with retroactive provisions is rather garbled:
(3) The following paragraphs shall be added to Article 10:
‘5. Article 3(1) to (2e) in the version thereof in force on 31 October 2011 shall apply to fixations of performances and phonograms in regard to which the performer and the phonogram producer are still protected, by virtue of those provisions in the version thereof in force on 30 October 2011, as at 1 November 2013 and to fixations of performances and phonograms which come into being after that date.
I guess this means that the 70 years term does not apply to performances whose copyright terms have expired already at the above mentioned dates.
Max