Looks like next year's route has been leaked early. Not due to be announced until 18th October but the tour site briefly expose the following details for a few minutes.
Unconfirmed route for 2012 Tour de France:
Prologue: Sat 30 June, Liège > Liège 6.1km
1, Road stage: Sun 1 July, Liège > Seraing 198km
2, Road stage: Mon 2 July, Visé > Tournai 207km
3, Road stage: Tues 3 July, Orchies > Boulogne-sur-Mer 197km
4, Road stage: Weds 4 July, Abbeville > Rouen 214km
5, Road stage: Thurs 5 July, Rouen > Saint-Quentin 197km
6, Road stage: Fri 6 July, Épernay > Metz 210km
7, Road stage: Sat 7 July, Tomblaine > La Planche des Belles Filles 199km
8, Road stage: Sun 8 July, Belfort > Porrentruy 154km
9, Time trial: Mon 9 July, Arc-et-Senans > Besançon 38km
10, Road stage: Weds 11 July, Mâcon > Bellegarde-Sur-Valserine 194km
11, Mountains: Thurs 12 July, Albertville > La Toussuire – Les Sybelles 140km
12, Mountains: Fri 13 July, Saint-Jean-de-Maurienne > Annonay 220km
13, Road stage: Sat 14 July, Saint-Paul-Trois-Châteaux > Le Cap d’Agde 215km
14, Road stage: Sun 15 July, Limoux > Foix 192km
15, Road stage: Mon 16 July, Samatan > Pau 160km
16, Mountains: Weds 18 July, Pau > Bagnères-de-Luchon 197km
17, Mountains: Thurs 19 July, Bagnères-de-Luchon > Peyragudes 144km
18, Road stage: Fri 20 July, Blagnac > Brave-la-Gaillarde 215km
19, Time trial: Sat 21 July, Bonneval > Chartres 52km
20, Road stage: Sun 22 July, Rambouillet > Paris Champs-Élysées 130 km
Total: 3,479km