Here is a list of the stations and the names they were changed to.
1. Line 11, Pyrénées became Alpes
2. Line 2, Alexandre Dumas was changed to Les Trois Mousquetaires
3. Line 11, Télégraphe became #Tweet
4. RER A, Joinville-le-Pont transformed into Joinville-le-Pont Pon ! Pon ! paying homage to a song of the 50´s
5. Line 4, Château d’Eau altered into Château de sable (sand castle); in reference to Paris Plage (or Paris beach which is done in summer).
6. Line 7, Cadet changed to Rousselle which is a reference to a popular child´s tune (too complicated to explain further).
7. Line 7, Crimée became Châtiment in reference to a novel from Fiodor Dostoïevski.
8. Line 2, Monceau changed to Ma pelle or from ¨my bucket¨ to ¨my shovel¨
9. Line 6, Saint-Jacques altered to Coquille in reference to scallops.
10. Line 2, Anvers, sign inverted. Phonetically the same word as envers or inverted.
11. Line 3, Parmentier became Pomme de Terre (potatoes). Antoine Parmentier, after whom the station was named, was an early promoter for the consumption of potatoes.
12. Line 3, Opéra slightly varied to Apéro, short for apéritif or a before dinner drink.
13. Line 3, Quatre septembre changed to 1er avril or the normal 4th of September to April 1st.