Adobe never announces its future plans, so there is no one here who can answer your question.
If you really need that tool it is available in the Computer, Desktop, version of LR. And would be better to do that type of work on a real computer.
There re is absolutely no reason why that would be better to do on a desktop computer. The iPad is a touch interface, which now has a very accurate pen tool. With the non destructive type of spot healing that is available on the desktop version of Lightroom it would be a breeze to do dust spotting and small blemish removal of hairs and other small things that are tedious and time consuming to do on the desktop version.
i already have switched to doing a large amont of my spot healing in Lightroom, from Photoshop as it's easy, fast and in the same workflow as my raw editing and I can then have a non destructive archive referencing my files with nearly all the work I need done on the images In one place.
I shoot mostly film and do high res scans and so dust spotting and hair removal is the most used task for this in my workflow. It would be so time saving to be able to do this in the Lightroom mobile app.
Saying that it would be better to do it on a real computer is completely short sighted. Haven't you noticed, an ipad/or other similar devices have slowly become the real computers.
I know of the workaround using Adobe photoshop fix, but the problem here is that it's creating a new flattened file. This is a file that is based off a smart preview, then saved to your device and then synced back in the cloud. It is not the original file and it is not full resolution. I want to still be able to head back to my main computer and export the files from my archive at full size.
Whatever makes the input more organic is going to win out. Please Adobe, could you make this possible. I want to buy the new iPad and I want to keep supporting Apple and Adob, but you need to start responding to the professionals needs
Alll the best
The way Lightroom has implemented spot healing, it takes a lot of computer horsepower to perform multiple healing operations, and probably the iPad doesn't have as much horsepower as your computer.
The way Photoshop has implemented spot healing will be faster than Lightroom.
So tell me how does it work so well in Photoshop Fix on the iPad. And I know for a fact that an ipads processer (I have an iPad 4 - and its fine for speed.) is more than powerful enough to make this possible. The newest iPad Pro is a beast for what it is. So that doesn't hold water anymore.
Also, it's ok if it's not as fast. It's more convenient and would great to be able to use the touch screen functionality. Why have all this touch screen functionality if it just isn't being used. Seems like a real waste of potential.
As I said, the non-destructive editing way it is implemented in LR requires more computer horsepower than the way it is implemented in Photoshop (which is destructive editing). If you're doing a single spot heal on a photo, it probably doesn't matter. If you are doing a few dozen on the same photo, LR will be slow and requires lots of computer horsepower, to the point where many people's computer slow down to unusability; I'm sure an iPad would do that same.