We're going to bring our live coverage to a close for tonight, but you can read more on the update from Catherine here.

On Saturday morning we'll bring you live updates and images from the Trooping the Colour ceremony in London, when the Princess of Wales is expected to appear with her family.

It's the yearly parade for the King's birthday and members of the Royal Family usually appear on the balcony outside Buckingham Palace during the event.

Some of the Household Cavalry horses that made headlines around the world when they bolted through London in April are also likely to be taking part.

So do come back and join us then.

Image source, Getty Images

The chief executive of Cancer Research UK has thanked the Princess of Wales for sharing the update on her treatment.

"Her words will mean so much to other cancer patients going through their own experience," Michelle Mitchell said.

"Cancer treatment can affect everyone differently, and it's important that the Princess is given the time and space to focus on her treatment," she said.

She added that high profile cases can encourage people to think about their own health, and if they spot something that doesn't look right, they should talk to their GP.

The Princess referred in her statement to starting a "little work from home".

We understand Catherine has been able to hold meetings with her official teams, when she feels able.

The meetings have been taking place at Windsor, and are thought to have involved her private secretaries and household staff.

As was reported at the time, Catherine was also briefed on a recent report by the Royal Foundation Centre for Early Childhood, but this did not signify an imminent return to work.

Michelle Roberts
Health editor, BBC News online

The Princess of Wales says she is still having preventative chemotherapy for cancer that was found after major abdominal surgery in January.

The preventative treatment is a course of anti-cancer drugs designed to get rid of any remaining cancer cells that may be present.

It reduces the chance of cancer growing or coming back. Doctors decide how much to give depending on the type of cancer.

Kensington Palace has not released any more details about the treatment.

Catherine's statement says: "My treatment is ongoing and will be for a few more months."

Read more here.

Image source, PA Media

Echoing the sentiments of the King, Rishi Sunak also says he is "delighted" that Catherine will attend Trooping the Colour.

In a post on social media, Sunak says:

The Princess of Wales’ statement will be especially meaningful to those who are fighting cancer and for their families.

They will recognise the same struggle in her words and draw hope and inspiration from her strength.

I'm delighted she will be in attendance for His Majesty's Birthday Parade and I know the whole country is behind her.

Despite this positive update about her progress, no time frame has been put on Catherine returning to royal duties full-time.

No decisions have been taken on specific engagements beyond Trooping the Colour, and the princess will attend them only as and when she feels able to.

It is understood the priority remains for the princess to have the time to get better and build her strength, meaning no time frame is being drawn up for her returning to a full work schedule.

Image source, PA Media

As Catherine confirmed herself in her message, she will attend Trooping the Colour tomorrow with the rest of the family.

We can now bring you a little more detail about the plans for the day:

• The Princess of Wales will travel with her three children in a state carriage down the Mall and watch the parade from the Major General’s Office with the rest of the family
• She is expected to appear on the Buckingham Palace balcony as she did last year (which you can see above) although the plans are subject to change
• Prince William will be on horseback during the parade as he has been in previous years

• The Princess of Wales remains the Colonel of the Irish Guards, but Lieutenant General James Bucknall will take the salute on her behalf
• Coverage of Trooping the Colour begins on Saturday at 10:30 BST on BBC One.

We have also heard from Buckingham Palace since the Princess of Wales' message was published.

A spokesperson says King Charles is "delighted" that she will be attend Trooping the Colour on Saturday.

"His Majesty is delighted that the princess is able to attend tomorrow's events, and is much looking forward to all elements of the day," the spokesperson says.

Signing off her message, Catherine thanks people for their understanding and those who have shared their stories with her.

“I am learning how to be patient, especially with uncertainty. Taking each day as it comes, listening to my body, and allowing myself to take this much needed time to heal,” she adds.

Prince William has not released any formal statement alongside the message from his wife.

However, it is understood that he is pleased to see his wife start to engage with the work and projects she finds important.

His focus continues to be supporting Catherine and their three children, while he carries on undertaking his public duties.

In a significant update, Catherine says she will be attending The King’s Birthday Parade this weekend, alongside her husband William, Prince of Wales, and children Prince George, Princess Charlotte and Prince Louis.

The princess also hopes to attend more public engagements over the summer but says she is “not out of the woods yet”.

In her statement, Catherine says her treatment will continue for a few more months.

But she says on days she feels well enough, she has been able to start doing a “little work from home”.

The princess also says it has been a “joy” to engage with school life and spend her personal time on things that give her “energy and positivity”.

Directly addressing her treatment, Catherine says she is making “good progress” but is experiencing “good days and bad days”, as those going through chemotherapy will know.

The princess says: “On those bad days you feel weak, tired and you have to give in to your body resting. But on the good days, when you feel stronger, you want to make the most of feeling well.”

The princess has released a personal message to the public alongside the update to her health.

In it, she says she has been “blown away” by messages of support and encouragement since her diagnosis was revealed.

“It really has made the world of difference to William and me and has helped us both through some of the harder times,” she adds.

Alongside Catherine's statement, Kensington Palace released the following photo of the princess, taken near her home in Windsor:

Image source, Kensington Palace

The Princess of Wales says she is making “good progress” after a cancer diagnosis earlier this year, and will attend Trooping the Colour tomorrow.

In a personal message released a few moments ago, she says her treatment is still ongoing and will continue for another few months.

"I am not out of the woods yet," says the princess in the short statement.

Tomorrow's Trooping the Colour will be her first public appearance this year, after her cancer diagnosis and recovery from abdominal surgery.

We'll bring you more from her statement shortly.