Across the eight days of the pre-season testing in Barcelona last month, the Italian team set the fastest times and emerged with a auto that was roughly 0.3sec quicker than the favourites.
Mercedes team boss Toto Wolff says the Ferrari threat is very real.
"The Formula 1 Rolex Australian Grand Prix is an iconic event on the sporting calendar and we are pleased to showcase premium CHiQ televisions throughout the venue", added David Esler, General Manager - Sales & Marketing of Changhong Electric Australia.
"What we see from testing, we think [we are underdogs]", Bottas told reporters in Melbourne.
After a series of unlucky races at the start of the 2018 season, Bottas finished the year with no wins to Hamilton's 11.
The new logo honours the establishment of Scuderia Ferrari in 1929 by Enzo Ferrari and his associates, the team said.
The 21-year-old Leclerc, Ferrari's youngest race driver since 1961, is one of a number of tyros seeking to make an early impression in Australia.More news: Beto O'Rourke leaps into 2020 Democratic presidential race
More news: "Bomb cyclone" headed our way, and here's what it means
More news: Apple confirms March event, video streaming service launch likely
Williams has endured an extremely tough pre-season after an equally hard 2018 campaign that saw previous drivers Lance Stroll and Sergey Sirotkin score only seven points between them, but the Grove-based outfit are fielding an all-new line-up in Kubica and 2018 FIA Formula 2 champion George Russell.
"Our optimism is not unfounded", said Red Bull motorsport consultant Helmut Marko.
"It will be interesting to see how the Red Bull upgrade works, and I know some other people, Ferrari usually bring an upgrade for the first race, so it'll be interesting to see".
The 34-year-old, who was dominant in 2018, is gunning to go one better than legendary five-time champion Juan Manuel Fangio and close in on Michael Schumacher's all-time record seven Formula One crowns.
Based on previous years, it is expected that Ferrari will also introduce new parts to the vehicle this weekend.
At a bumpy street circuit where overtaking has been hard, F1 bosses will hope the introduction of new rules can inject spice.
"As a team, we have learned a lot about the package we had in testing, and how we can optimise it better for the first race".