James Webb

[Anomalocaris]

I'm most interested in observations of extra-solar planets.  However, even Webb isn't going to be able to see earth-like planets or measure their atmosphere.  That will likely require LUVOIR or a set of space-based telescopes doing interferometry.

depends on what you mean by “see”.   dozens of exoplanets have already been directly imaged from the ground.

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There are also several additional Hubble scale optical snd near optical space telescopes in the works, scheduled to be launched in the next 5 years. They either cover different wave length from hubble, or capable of scanning the sky much more quickly than hubble so as to be able to provide full coverage of the sky at bear hubble resolutions. These are Less flashy than JWST, but perhaps promise work of comparable importance.