Salesforce.com has announced “Performance Edition” – a new edition that includes Sales Cloud, Service Cloud, Force.com (Salesforce Platform), Work.com, Data.com & Salesforce Identity. Priced at USD 300 Per User, the Performance Edition will be available from Nov 4, 2013. The idea seems to be to tie all the Salesforce.com products together and offer under one license.
Read more about this at http://www.salesforce.com/company/news-press/press-releases/2013/08/130812.jsp