While running through my weekly list of chess news sources, I was surprised to find more top-level World Championship events than I can remember seeing in a single month. The following screen snapshot shows the essential info.
For more info (and a readable presentation), see FIDE Calendar 2013. World Cup 2013 ended at the beginning of the month and World Championship Match 2013 doesn't start until November, but they are both worth mentioning.
As for the Grand Prix events, the Paris tournament is the sixth and last event in the 2012-2013 Grand Prix series, while the Tashkent tournament is the third of six in the 2013-2014 FIDE Women's Grand Prix series.