"Faster than expected" is a common phrase in climate research. For example, the arctic is warming 4X faster than the rest of the planet, antarctic ice melt, arctic ice extent reduction, methane emissions, etc, all happening faster than expected, depending on the source. Someone even put together a namesake blog, fasterthanexpected.com - it's a decent source for a high level picture of what is going on.

I say "depending on the source" because there are some extreme doom and gloom types for whom these changes are happening more slowly than expected. However, the difference is negligible. The doom and gloom types might say the end of the world is only 2 years away, which is extreme, but now even peer reviewed research in respected publications are starting to mention very severe outcomes within decades. In previous decades, these publications wouldn't publish anything like that at all, then eventually they began to publish papers that mention these events happening within centuries, and now papers are coming out with very serious consequences being only decades away. The really scary thing is that the likelihood of sudden catastrophic change (eg: methane bombs, Thwaites Glacier collapse) is increasing, which could make the shorter time frame predictions actually come true.