It appears that the routing for this tour is being changed.
For 2025 tours the routing is in a clockwise direction, heading south from Versailles and then traveling clockwise until the return to Paris at the end of the tour.
For 2026 tours, at least per the itinerary it looks like from Versailles you head north and then west traveling in a counter-clockwise direction before the return to Paris at the end of the tour.
For the 2026 tours, the hotel list is messed up as well. It shows staying at the Hotel Le Normandy Barriere Deauville on days 2&3, and then again on days 8&9. For 2025 tours you do stay there on days 8&9, but for 2026 tours if they truly are changing the routing direction then on days 8 & 9 you should be staying at Chateau de Rochecotte.
I sent a Contact Us message to Tauck to point out these inconsistencies.
Hopefully they can get this corrected soon.