The original communication A Digital Agenda for Europe COM(2010) 245, regarding this Europe 2020 (EU2020) flagship initiative was published 19 May 2010.
However, the original communication was later replaced. The corrected version is available in the official languages of the European Union. The communication in English:
Annule et remplace le document COM(2010) 245 final du 19.5.2010
Concerne toutes les versions linguistiques
COMMUNICATION FROM THE COMMISSION TO THE EUROPEAN PARLIAMENT, THE COUNCIL, THE EUROPEAN ECONOMIC AND SOCIAL COMMITTEE AND THE COMMITTEE OF THE REGIONS
A Digital Agenda for Europe; Brussels, 26.8.2010 COM(2010) 245 final/2 (41 pages)
If you want to start your tracking exercise upstream, you could profit from the first two footnotes of the communication about the main sources of the Digital Agenda (page 3):
EUROPE 2020 - A strategy for smart, sustainable and inclusive growth - COM(2010) 2020.
The Digital Agenda is built upon wide consultations, in particular on inputs from the Digital Competitiveness Report 2009 - COM(2009) 390; the Commission's 2009 public consultation on future ICT priorities; the Conclusions of the TTE Council of December 2009, the Europe 2020 consultation and strategy; and the ICT Industry Partnership Contribution to the Spanish Presidency Digital Europe Strategy:, the own-initiative report of the European Parliament on 2015.eu and the Declaration agreed at the informal Ministerial meeting in Granada in April 2010. All these are available at: http://ec.europa.eu/information_society/eeurope/i2010/index_en.htm.
Digital Agenda portal