New shows in Madrid, Tallinn, Belgrade and Bucharest were just added to Madonna's 'Sticky & Sweet' Tour schedule!

Below is the related info for each of them:
July 23th - Madrid - Vicente Calderon
Public Onsale: March 5rd at 8am local time
Fan club pre sale: March 2nd at 10am local time for Legacy members and at Noon local time for newer members

August 4th - Tallinn - Song Festival Ground
Public Onsale: March 5th at 9am local time
Fan club pre sale: February 25th at 10am local time for Legacy members and at Noon local time for newer members

August 24th - Belgrade - USCE Park
Public Onsale: February 27th at 10am local time
Fan club pre sale: February 23th at 10am local time for Legacy members and at Noon local time for newer members

August 26th - Bucharest - Parc Izvor
Public Onsale: March 3rd at 10am local time
Fan club pre sale: February 23th at 10am local time for Legacy members and at Noon local time for newer members

Source: Madonna.com