There have been several referendum bills proposed in 2010:
Scottish Referendum Bill, 2010, draft bill, later passed in 2013
United Kingdom alternative vote referendum, 2010, draft bill, later passed in 2011
Icelandic loan guarantees referendum, 2010's bill (8 January 2010)
Slovenian border dispute agreement referendum, 2010's bill (26 April 2010)
Turkish constitutional referendum, 2010's bill (7 May 2010)