We're hearing that the plenary session has been delayed until 6pm GMT.
You can follow all the developments from the climate change talks here on our main story.
Sir David Attenborough's warning in Poland
British naturalist Sir David Attenborough opened the climate change talks earlier this month.
In his speech, he implored world leaders to act now to save the natural world, before it's too late.
Video content
Video caption: Sir David Attenborough: Time is running outSir David Attenborough: Time is running out
What's up for debate?
PACopyright: PA
Officials want to set out a common rule book for how
countries report their emissions of harmful gases, and how they’re combating
them.
There is also talk of financial support for poorer countries
suffering from the effects of climate change, and carbon markets – in which countries
buy “carbon credits” from each other to lower their emissions.
Many issues have proven controversial.
Negotiators extended the talks through the night ahead of today’s session, and published the rulebook proposals this morning.
You can read all 156 pages of the proposals here... Or try this helpful (and brief!) rundown from our environment correspondent Matt McGrath, who's at the talks.
UN climate change talks nearing a close
Welcome to the BBC’s coverage of the final stages of the UN
climate summit in Poland.
Officials from nearly 200 countries are in Katowice to
decide the rules for implementing the 2015 Paris Agreement.
Several sticking points forced negotiators to continue talks
through the night on Friday, but there are still high hopes for a deal.
Follow along for live announcements, reaction and analysis.
ReutersCopyright: Reuters
Negotiations continued through the night on FridayImage caption: Negotiations continued through the night on Friday
Live Reporting
Rebecca Seales and Toby Luckhurst
All times stated are UK
Video caption: Sir David Attenborough: Time is running outSir David Attenborough: Time is running out 
PACopyright: PA 
ReutersCopyright: Reuters Negotiations continued through the night on FridayImage caption: Negotiations continued through the night on Friday
Latest PostSession delayed
We're hearing that the plenary session has been delayed until 6pm GMT.
You can follow all the developments from the climate change talks here on our main story.
Sir David Attenborough's warning in Poland
British naturalist Sir David Attenborough opened the climate change talks earlier this month.
In his speech, he implored world leaders to act now to save the natural world, before it's too late.
Video content
What's up for debate?
Officials want to set out a common rule book for how countries report their emissions of harmful gases, and how they’re combating them.
There is also talk of financial support for poorer countries suffering from the effects of climate change, and carbon markets – in which countries buy “carbon credits” from each other to lower their emissions.
Many issues have proven controversial. Negotiators extended the talks through the night ahead of today’s session, and published the rulebook proposals this morning.
You can read all 156 pages of the proposals here... Or try this helpful (and brief!) rundown from our environment correspondent Matt McGrath, who's at the talks.
UN climate change talks nearing a close
Welcome to the BBC’s coverage of the final stages of the UN climate summit in Poland.
Officials from nearly 200 countries are in Katowice to decide the rules for implementing the 2015 Paris Agreement.
Several sticking points forced negotiators to continue talks through the night on Friday, but there are still high hopes for a deal.
Follow along for live announcements, reaction and analysis.