No. This is a sharper momentary dip. Sort of expected with climate change.
If you look at the summer months for 2025, (January and February for the southern hemisphere) you can see ice sheet area declined far more rapidly rapidly than 2026 did.
Rates of change, particularly ones that are of more recent data, can be very misleading. Now if the same rate of change continued through the end of August, then it would definitely be anomalous.
Climate change does not make immediate impacts like this. Climate change makes the trend of the WHOLE line lower, and more volatile. Notice that 2025 and 2026 lines are at the lower end of the graph.
One (ugly) way to understand this chart better would be the area under the curve for a given year. As 2026 isnt over yet, you cant do this reliably beyond the most recent data point.
The "big" thing then would be if the result for each year was successively lower.