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It's already 54% for folks with a 7 figure income deriving their income from short term investments (say, stock options). This is almost always the case in tech.

37% federal

13.3% state

3.8% Net Investment Income Tax

54.1% total, before this new tax.

Note that before the 2017 federal tax changes, California incpome tax was deductable at the federal level without a cap (but subject to AMT), so a 40% marginal federal tax and a 13% marginal state tax did not add up to a 53% marginal income tax like it does now.

2017 federal tax changes - meaning Trump's tax bill right?

Yes, it was the Tax Cuts and Jobs Act of 2017 signed by President Trump.

The headline is pretty manipulative then. Because I saw it and was shocked, imagining this to be a steep increase.

Are these large tax rates unusual in other states?

California has high income tax rates partly because of Prop 13 limits on property tax rates.