The Faenza-based squad mentioned on social media that the AT03 shall be revealed on Monday, 14 February however stopped wanting offering any more information concerning the launch.
AlphaTauri is the fifth group to announce its launch date, with McLaren, Aston Martin, Mercedes and Ferrari already having revealed once they plan to disclose their new vehicles.
Having completed sixth within the constructors’ championship final yr, AlphaTauri is hoping that an unchanged line-up of Pierre Gasly and Yuki Tsunoda might help it transfer up the order this season.
Gasly delivered the most effective campaigns of his profession final yr as he repeatedly certified within the high ten, whereas Tsunoda had a extra up-and-down rookie season, however completed the season strongly.
Though AlphaTauri’s earlier engine provider Honda has pulled out of F1, it is going to proceed with the identical energy models as sister group Purple Bull, which is now working its personal engine division.
However regardless of new guidelines launched for this yr geared toward closing up the grid, AlphaTauri group boss Franz Tost has remained cautious about simply what is feasible within the new period.
Talking on the finish of final yr, he mentioned: “It’s extra of a really unknown story, as a result of it is utterly new every little thing.
“We haven’t any comparisons with others. I belief our engineers as a result of they’ve constructed two put vehicles. The  AT01 was already a superb automotive final yr, and the 2021 automotive was a subsequent step ahead.
“Why they should not be capable to make AT03, even when it is a utterly new automotive, additionally very aggressive?
“However you already know, there are, from the technological aspect, there are additionally totally different philosophies. I simply hope that we go in the appropriate path.
“The place we then actually find yourself I do not know. However I belief our group, the aero group is doing an excellent job and that they’re going in the appropriate path.”
F1’s first official pre-season check will happen at Barcelona in Spain from 23 February.