Super Resolution is in LR now (ACR since March)

Super resolution has been in ACR in Photoshop for many months (since March) now, but it is finally directly in LR

Have you tried the Abobe ACR Super Resolution yet? It is awesome! It increases the pixel count 400%. Enhance allows you to increase image quality for making large prints or increasing the resolution of a cropped image. It is coming to Lightroom "soon" (soon is Adobe's timeframe, stated in March), but for now, right click, edit in, open smart object in Photoshop which will open the file in ACR).

Bottom line: Work well and it is Better, Faster, and Easier (workflow wise) than Topaz Gigapixel. 

Why/When use Abobe ACR Super Resolution? 

-- for older cameras with less megapixels 

-- to crop an image to get bigger birds/subjects  

"Super Resolution, introduced in Camera Raw 13.2, helps create an enhanced image with similar results as Raw Details but with 2x the linear resolution. This means that the enhanced image will have 2x the width and 2x the height of the original image, or 4x the total pixel count. This feature supports the same file types as Raw Details, plus additional file types such as JPEG and TIFF. Super Resolution is especially useful to increase the resolution of a cropped image." https://helpx.adobe.com/camera-raw/using/enhance.html

Tip -- If you want to go make your image 4x the size of your original size, open the file in ACR, save the dng (2x) and then re-open it in Adobe Camera Raw and run the enhance feature again on this saved copy (you can’t just run it again in Camera Raw without opening it and saving it again).

I compared Abobe ACR Super Resolution to Topaz Gigapixel, which I have used in the past and it works, but it is clunky and slow. Workflow wise Topaz Gigapixel does not interpret RAW files well, so I have to open the file in ACR and save it as a TIFF and then open it in Topaz Gigapixel, takes a while to process. See our comparisons below. 

From Julianna Kost https://jkost.com/blog/2021/06/lightroom-classic-10-3-support-for-apple-silicon-premium-presets-super-resolution-and-more.html

• In the Develop module, choose Photo > Enhance or, right-click in the image (Control -click on Mac) and choose Enhance to display the Enhance Preview dialog. 

• Applying Super Resolution automatically enables the Raw Details feature to create the highest quality image possible when working with raw files.  

• Any adjustments made to the source photo will automatically be carried over to the newly created, enhanced DNG.

• While you can’t apply Super Resolution multiple times to the same original, you can apply Super Resolution and then enlarge the image further when exporting or, within another application such as Photoshop (using the Image Size command).

To learn more about how Super Resolution works, check out this post by Eric Chan https://blog.adobe.com/en/publish/2021/03/10/from-the-acr-team-super-resolution.html#gs.4grl9h