It seems like we now have another tour date in Europe for the summer tour in 2011. Today, Kings Of Leon got confirmed for the Pinkpop Festival in Holland. The person in charge of organizing the festival, Jan Smeets, also said on Dutch TV that they are very close to having Linkin Park as the third headliner... that they only have to sign the contract to get them confirmed.
11.06.2011 Landgraaf, Netherlands, Megaland, Pinkpop Festival
Thanks go out to Jotunify for telling me. Stay tuned for the possible confirmation of this!
EDIT: We have one more topic here, which is about LP possibly coming to France to play at a venue with around 60,000 people.