Apparently today is the day to announce the announcement of new Formula 1 cars. Ferrari was first this morning and said that its 2013 car will be revealed on February 1. LotusLotusUnited Kingdom, 1952 > present68 models
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was next when it tweeted a picture of the E21 and said that more information will come soon. The latest to make its announcement is MercedesMercedes-BenzGermany, 1924 > present197 models
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, which says it will reveal its car on February 4 at 1:30pm local time at the Circuit Jerez. 

Unfortunately, Mercedes did not give any more details about the car or release any images of it. The announcement will be made by Ross Brawn, Nico Rosberg and Lewis Hamilton.

That is three of the major teams covered in terms of announcements. Red BullRed BullAustria, 2004 > present12 models
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has said that it will likely reveal its car later than usual in 2013. McLarenMcLarenUnited Kingdom, 1963 > present92 models
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has said nothing about when we will see its car.