Pope Benedict sent a letter to all the bishops explaining his reasons for lifting the excommunications. He talks about the huge erruption that followed in its wake and defends the action.
He is also incredibly pastoral toward the bishops, the faithful, SSPXers and especially the priests in the SSPX. He is also very straight forward no BS about the whole thing. Fr. Z gives good commentary and has some good closing comments.
Don't take your information from what the secular media might write. They will have their slant and it definitely will not be spiritual. So, before reading anything else about this go to Fr. Z's blog: