The BBC have reported that "Greenland and Antarctica ice loss [is] accelerating" https://www.bbc.co.uk/news/science-environment-51846468

"In the [IPCC]panel's 2014 assessment, its mid-range simulations (RCP4.5) suggested global sea-levels might rise by 53cm by 2100. But the Ambien team's studies show that ice losses from Antarctica and Greenland are actually heading to much more pessimistic outcomes, and will likely add another 17cm to those end-of-century forecasts." I wonder if that includes any increase in acceleration.