Anthony Davidson will continue as Honda's test driver this season rather than racing for Super Aguri.
The Honda-powered team reached an agreement with Bridgestone to end their partnership.
Jenson Button's BAR Formula One team has been put up for sale -- but only to allow a new joint venture between engine partners Honda and majority owners British American Tobacco to buy it back.
With a third of the F1 season already wrapped up in white and neon green, here are a few facts we can glean from this insanely topsy-turvy year so far.
Ferrari's six-times world champion Michael Schumacher starts Sunday's Canadian Grand Prix on the third row in sixth place.
Honda's Otmar Szafnauer said Imola represented the first of several significant steps planned by BAR's Japanese engine partner this season.
Briton Jenson Button looked a threat to the Ferrari with the second best lap in both 45 minute sessions. \n\n
The Italian grabbed the third pole position of his career, knocking Honda's Jenson Button off the top spot as the seconds ticked away at the end of the session.
Ferrari's world champion Michael Schumacher, winner at Silverstone last year, qualified a disappointing ninth.
The FIA ban was the harshest action taken against a Formula One team for 20 years.
Jenson Button cannot have enjoyed his afternoon off on Sunday after Formula One's governing body took the BAR out of Barcelona.
Briton David Coulthard has visited Williams bosses in a bid to convince his former employers to take him back next year.
Team boss David Richards says the Japanese driver is an extraordinary talent and his job is to harness it.\n\n
The Ferrari ace fears Jenson Button's BAR could stand between him and yet another Formula One record in Canada on Sunday.
The Italian swept through to take the chequered flag for his first win in 117 starts.
The world champion was 1.4 seconds faster than Jenson Button in Friday's practice for the Spanish Grand Prix.
"I think he is in the perfect position. Honestly, he has a strong car, they're very quick, very consistent," Schumacher said.
Former World champion Jenson Button says he is shocked Sebastian Vettel will not drive for Ferrari next season and that it would be "madness" if the team had pushed him out. Ferrari said last week that four-times World champion Vettel would leave them at the end of the 2020 season, after talks on a new contract ended without a deal.
Formula One is set to test a new on-car display system championed by Lewis Hamilton's father Anthony aimed at helping fans to follow a race without having to take their eyes off the action.
The 23-year-old crashed in free practice for the Monaco Grand Prix and was taken to hospital for precautionary tests.
Ferrari will present their new Formula One car online on January 30, a day after McLaren take the wraps off their Honda-powered challenger.
McLaren's Fernando Alonso put in a day's work in the team's Formula One simulator on Wednesday ahead of his expected return to the racetrack in Malaysia next week after his crash in pre-season testing.
Team by team analysis of Sunday's US Formula One Grand Prix at the Circuit of the Americas.
Quadruple Formula One world champion Sebastian Vettel went for five on Friday with the German choosing to have that numeral on his car when he is eventually deposed as number one.
Sebastian Vettel's hopes of fighting champions Mercedes for victory in Sunday's Bahrain Formula One Grand Prix went up in smoke before the start when his Ferrari's engine blew on the formation lap.
Sunday's British Formula One Grand Prix was stopped on the opening lap after Ferrari's Kimi Raikkonen speared heavily into the barriers.
Following's Verstappen's 2021 title win, here's a list of F1 champions over the years...
Ferrari's Kimi Raikkonen took pole position for the showcase Monaco Formula One Grand Prix on Saturday with world championship leading German team mate Sebastian Vettel alongside him on the front row.
Lewis Hamilton's world championship defence got off to a flying start on Sunday with a crushing victory for Mercedes in the season-opening Australian Grand Prix as Formula One rivals succumbed to a farcical rash of reliability problems.
Sahara Force India's six-race point streak ended at the German Grand Prix as Paul di Resta and Adrian Sutil finished 11th and 13th respectively, at the Nurburgring circuit on Sunday.
Sahara Force India had a disappointing outing as Adrian Sutil managed 14th while team mate Paul di Resta was two places below at 16th in qualifying for the Italian Grand Prix in Monza, on Sunday.