Two of the mainstays of world champion Viswanathan Anand's team of seconds are Peter Heine Nielsen and Rustam Kasimdzhanov. Kasimdzhanov in particular has been a huge help with Anand's work in the Semi-Slav, some of the fruit of which was seen in Anand's great win over Aronian from Wijk aan Zee earlier this year and in his two wins with the black pieces in his 2008 match with Vladimir Kramnik.
Nielsen went over to the Magnus Carlsen camp for the Candidates, however, and has agreed to not represent either player in their forthcoming title tilt, scheduled for this November. And now in a post-game press conference at Zug, Kasimdzhanov has decided to bow out as well. (HT: Jaideep)
I'm sure Anand will find some outstanding analysts to work with in preparation for the match, but there are also the issues of team chemistry and synergy, and it will be a challenge for the champion to overcome the loss of such close and effective long-term seconds. Presumably Surya Ganguly is still on the team, and I think he has worked with Radoslaw Wojtaszek before - maybe he'll join on again. It will be an interesting challenge for him, that's for sure.