Officially in the "Instrument Commissioning" phase.
At least some of the instruments must have been working to align the telescope — I guess they now test the rest.
https://jwst.nasa.gov/content/webbLaunch/whereIsWebb.html?units=metric <
There is a big ✔️ which I presume indicates that the instrument commissioning is complete.
Now let's see some pictures!
https://jwst.nasa.gov/content/webbLaunch/whereIsWebb.html?units=metric <
Here is a rundown of the 17 different instrument modes...
Seventeen Modes to Discovery: Webb’s Final Commissioning Activities
The telescope is working — here is the first image since instrument commission was completed:
Spoiler
NOT!

There is a new blog post for anyone that would care to read it.
from: Webb Nearly Set to Explore the Solar System
I have a soft spot in my heart for Uranus
An interesting article about some of the upcoming observing targets
https://news.abplive.com/science/james-webb-space-telescope-will-star-exploring-the-solar-system-soon-says-nasa-1532972
JWST Successfully tracks an asteroid...
https://www.space.com/james-webb-space-telescope-tracks-moving-target
I was hoping for some great pictures, but the article is interesting enough on its own
https://hothardware.com/news/nasa-points-space-telescope-at-a-smoldering-super-earth
Not the JWST, but very interesting fifteen minutes
And this one from Poker's Liv Boeree — a genuine astrophysicist
Interesting video of Liv. It's always a interesting topic, but I don't think we ever know how big the universe is.
Originally posted by SDK1987
Interesting video of Liv. It's always a interesting topic, but I don't think we ever know how big the universe is.
Quite correct, but on the plus side, it gives a lot of astrophysicists something to do.
Not JWST — but well worth the time
Some more info on the detector:
https://en.wikipedia.org/wiki/DAMA/LIBRA
It looks like the JWST got hit by a micrometeorite
https://www.cnn.com/2022/06/08/world/webb-telescope-mirror-impact-scn/index.html