New Queensland premier Steven Miles vows to ramp up emission ...

Queensland's new premier Steven Miles says he wants to make improvements to the health system and the cost of living, as well as addressing problems around youth crime and housing.

Labor MPs have unanimously elected Mr Miles as the sunshine state's 40th premier, less than a week after Annastacia Palaszczuk announced she was retiring after almost nine years in the top job.

He was unanimously supported by the Labor caucus in Brisbane this morning, with Treasurer Cameron Dick becoming the new deputy premier.

In his maiden speech this afternoon, he outlined some of the first steps he'd take in the top job.

Steven Miles outlined a number of ideas in his maiden speech on Friday.(ABC News)

These include setting a new emissions target, bringing back the Queensland leader's forum, establishing a new delivery authority for the 2032 Olympic and Paralympic Games and exploring new locations for satellite hospitals.

Mr Miles also said he would meet with supermarkets over prices and work with local communities to find solutions to youth crime.

Earlier today, Mr Miles said there would be five new ministers in his government.

"They are younger, they are energetic, they are ready to deliver a fresh approach for Queenslanders," he said.

Steven Miles and Cameron Dick were greeted to applause as they entered the Labor caucus meeting ahead of the leader and deputy leader vote.(ABC News: Rachel Riga)

Mr Miles said his message to Queenslanders is that they have "a government that is on their side".

"Ultimately, I'm a suburban Queensland dad with three kids, and so many Queenslanders are like me, and I want to demonstrate to them that I understand what concerns them in their day-to-day lives and how government can help them."

Mr Dick described it as a "great honour" to be elected deputy premier by his colleagues.

"We have a great opportunity to build on the legacy of Annastacia Palaszczuk and the very great work that she did serving the people of Queensland," he said.

Mr Miles and Mr Dick were officially sworn in at a ceremony at Government House. Shortly afterwards, Mr Miles delivered his first speech as premier, outlining his government's priorities.

He told industry, business, and political leaders his government would reduce greenhouse gas emissions by 75 per cent by 2035.

The state government had previously committed to a 30 per cent reduction on 2005 levels by 2030, and net zero by 2050.

The new premier said the new target would be legislated.

"By legislating this target we are making a very clear statement to the world that Queensland is the place to do business if you’re looking to use clean energy to create prosperity," he said.

Mr Miles formed a leadership team with Mr Dick on Monday — a day after Ms Palaszczuk announced her resignation – ending a brief public contest with Health Minister Shannon Fentiman.

It is the first time since 2005 that the Queensland Labor Party will have two men as premier and deputy premier. 

Transport Minister Mark Bailey and Tourism Minister Stirling Hinchliffe have already confirmed they will vacate the front bench, with Mr Bailey saying it was time for him to step aside to "support the promotion of one of our many talented younger Labor MPs".

Steven Miles (right) and Cameron Dick have been sworn in as premier and deputy premier.(AAP: Jono Searle)

Mr Miles was elected to state parliament in the seat of Mount Coot-tha in 2015.

After the electorate was dissolved in a redistribution, he became the Member for Murrumba in 2017.

Mr Miles has served as environment minister and health minister, and took over from Jackie Trad as deputy premier in 2020. 

The Queensland cabinet will now be expanded from 18 ministers to 19, with Labor's right faction rewarded with an extra spot on the frontbench.

Mr Dick leads the right faction, which played a pivotal role in installing Mr Miles to the top job over Health Minister Shannon Fentiman.

Departing cabinet are Annastacia Palaszczuk and Stirling Hinchliffe from the right, as well as Craig Crawford and Mark Bailey from the left.

Premier Steven Miles says he will build on Ms Palaszczuk's legacy.(ABC News)

Pine Rivers MP Nikki Boyd and Bundamba MP Lance McCallum from the left are entering the frontbench.

Entering Cabinet from the right faction are Jordan MP Charis Mullen, Aspley MP Bart Mellish, and Cairns MP Michael Healy.

It means in there will be nine left faction ministers, seven ministers from the right, and three ministers from the so-called old guard, led by Education Minister Grace Grace.

Former premier Annastacia Palaszczuk has officially tendered her resignation as the Member for Inala. It will take effect from 5pm on December 31.

"It has been a great honour to serve the Inala electorate community since 9 September 2006 and I take this opportunity (to) wish them and all Queenslanders the very best for the future," she wrote in the resignation letter.

A by-election in the safe Labor seat in Brisbane's south-west will be held early next year.

Ms Palaszczuk did not attend today's caucus meeting.