No idea how reliable this source is, but here is a translation:
https://www.corriere.it/sport/formula-1 ... 4a18.shtml
"Among the particularities it will have white and very visible numbers that reflect the design used between 1979 and the early 1980s. There will also be a particular version of the Tricolor."
"The 2020 machine is the result of the development of that of last year, and it is natural that this will happen in 2021 with regulations and tires unchanged. Surprises, however, will not be missing, both in colors and graphics. A particular version of the Tricolor will appear, a choice also connected to the place of presentation. In Reggio Emilia, in 1797, the Italian flag was born, the mayor of the city, Luca Vecchi, will deliver to the stables an historical version of the banner. Confirmed the matte varnish (to save weight), the red will be darker, less toned to orange, and with new touches. Like the numbers that mark Charles Leclerc (16) and Sebastian Vettel (5): they resume the design used between 1979, that of the Jody Scheckter World Cup, and the early 1980s. White numbers, very visible, characterized by a thin profile, of the same color, which surrounds each digit. It is a tribute to a period of great competitive intensity, closely linked to the unforgettable «27» by Gilles Villeneuve."
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Second act, the technical menu. The wheelbase (the distance between the front and rear wheels) has remained unchanged, the weak points of aerodynamics have been rethought to obtain more load in the slower and more guided sections of the slopes. For this reason we will see a more complex Ferrari in the appendices, less «clean» in the forms but not «beaten» forward in the Red Bull style. More elaborate and ductile precisely to go strong in the corners, where on certain circuits the 2019 single-seater also lost more than 1 '' from Mercedes recovering in part thanks to the speed on the straights."
"Simone Resta, returning from Alfa, joined the group of frame builders (Enrico Cardile and David Sanchez) . But the design philosophy of the front and "bellies" does not change, some of these solutions have been taken up in general concepts by both Mercedes and Red Bull."
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On the engine, research continued to have more power from the V6 and from the electrical side and to control consumption: the power unit is a theme that in the past season has given significant joys but also a series of controversies that will not be able to continue, with the hope that the Federation establish clear criteria and parameters to avoid speculation and gossip that damage F1 above all."
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Last act: in the hunt for the name, the abbreviation SF1000 is particularly popular as a bet: it would celebrate Ferrari's 1000th GP in F1 that falls in Canada, but it can slip in France if the Chinese GP as it seems will be canceled or postponed. And the most rational SF20 (meaning 2020). In the end it is an irrelevant detail, all that matters is that this new Red is more effective and more fortunate than her last older sisters."