The FIDE Open in London and the British Knockout Championship started with the London Chess Classic, but finished two days earlier. Why? To make room for one more event: the Super Rapidplay, which runs on Saturday and Sunday, open to all those who played in the aforementioned events (excepting the Classic, of course).
Then there's the Nutcracker Battle of the Generations, a Scheveningen-style event with Boris Gelfand, Alexander Morozevich, Alexei Shirov, and Alexei Dreev on the Experience side and Vladimir Fedoseev, Daniil Dubov, Vladislav Artemiev, and Grigoriy Oparin representing the Youth. The top scorer overall qualifies for next year's Zurich Chess Challenge, which is now the Korchnoi Zurich Chess Challenge. The present event takes place in Moscow from the 17th through the 22nd.
Young superstars Richard Rapport and Wei Yi will play a six-game match in China from the 19th to the 24th of this month.
An event that's already underway is the European Individual Rapid and Blitz Championship in Tallinn, Estonia; it started on the 14th and runs through the 18th. The rapid portion is over, and Alexander Riazantsev won on tiebreaks ahead of Maxim Matlakov; both players scored 9.5/11. Three players finished with 9 points apiece, and the bronze went to Rauf Mamedov on tiebreaks. (Full results here.) The blitz tournament takes place Saturday and Sunday (i.e. today/tomorrow and the next day).
Last but certainly not least, and after all the aforementioned events have come to an end, the World Rapid and Blitz Championships take place in Doha, Qatar from December 25 (Merry Christmas!) to the 30th.