Official decision is to be announced in March, but two newspapers from Germany and Italy share the same leak – deal is already done, Berlin will host the 2015 Champions League final with Milan following in 2016.
In March this year all of Europe was informed about Portugal's largest stadium hosting the 2014 Champions League final for the first time. In March 2013 UEFA was supposed to give similar statement about future edition hosts.
But, independently from one another, German “Bild” and Italian “La Gazzetta dello Sport” claim they already know the selected stadiums. According to both media outlets decision is already done and finals will be shared by Berlin's Olympiastadion (2015) and Milan's San Siro (2016).
Should these revelations be true, it would mean a début for the German venue in such game, while for San Siro this would already be 4th final since 1950s. Months back UEFA assured a final game would be granted to San Siro, providing the ground gets a renovation, which is to be carried out before the 2016 game.