Find it via the Photoshop filter menu and the Neural command. A number of different options are available once the panel appears. They are added on occasions by Adobe so the list mentioned here may be different within a week or month or year. I will be doing individual video tutorials / help pages on all of them. It is split into 'featured' as well as beta (ones not ready for the big time as yet but you can try them out) and wait list (you just get a few hints).
The featured as of now include skin smoothing as well as JPEG artifacts and Style transfer and super zoom and colorize and JPEG artefact's removal
The betas include smart portrait, makeup transfer, colorize, landscape mixer, face cleanup etc. Some are marked as betas
Colorize,
Portrait generator, Water long exposure, Shadow, Latent visions, Noise Reduction... the list gets longer, the list includes a brief bit of information to tantalize but that is all.
With all these effects, the first thing you have to do is click the download button. I am not certain if you have to click it again to re-download it if there is an update etc. It can take a short while to download the beta. Once you have the effect, you then can run it on the current image or layer.
By default all are turned off but click the little slider beside the name to turn it to the active state, after download that is done straight away but if you come to the neural at any time later, you will still have to 'activate' it. You can have more than one on the go. I have no idea if there is an ordering process
All the panels have a fairly similar format in that they may have a picture if you need to add focal points such as in colorize as well an additional set of sliders and these will vary from effect but most have some control sliders. Such as in the colorize, you can modify the focus color as well as cyan etc
There is also a massive preview screen on the left.
All come with two boxes at the bottom to ask whether the result was good or not and I know that sounds odd but this is AI learning set and it needs to learn if what it does is good or not.
At the top of the panel there is a reset button so you can restore the settings to the default.
At the bottom of the panel, there is also a super useful output field and that offers a number of great options such as generate the result in a new layer etc. I just wish all the effect in the application had this super useful feature.
You can run them in conjunction with selections.
You can use the edit menu fade in some circumstances such as output to current layer but not with new layer etc. If the output is to a new layer, you can then take the new layer and change the blending modes and opacity and how it combines with the original now underlying layer. Sadly you cannot use them on color channels though you can if you split the image into three channels etc
They work in RGB but also in CMYK etc. They don't work in 32bit etc.
You can combine the effect with actions as well as use it with art history brush etc
This is a super useful one. I have 1000s of black and white pics and it is wonderful to be able to apply this to them and within seconds with the default setting, the result is quite impressive with it deciding that a jumper is red or green etc and a table is blue. Of course, I have no idea if it is right as I was about 2 at the time. Still, it is a quality image and brings a lot of old B&W photos to life in seconds with minimal work. It does make the occasional glitch and adds two or more colors where clearly it should be one.