Current EF TS lenses are all excellent and there's really no reason not to get them if you need them for architecture or landscape work. I don't think the RF TS lenses are coming any time soon and it's also reasonable to expect they'll first announce one, or at best two lenses. So it might be a long while before there's a whole RF TS set (17-24-50-90-135).
My guess is that a RF 24 TS will be the first (or whatever is closest in terms of angle), followed by RF 90 TS to satisfy the product photographers.
The possibility of AF versions to me seems essentially unnecessary, especially if it causes huge price increase. What I would very much like to see (and find waaay more useful) is an included lens collar with all of these lenses. Fuji GF 30 TS is a great example. Also, I would love to see better shift controls. The knobs are fiddly and difficult to use. I think Laowa has this nailed down to perfection with their ring controls.
Speaking of which, Laowas zero-D shifts are very good and you save a bunch of money if you don't need the tilt functionality. I personally use tilt extremely rarely and 99,9% of time it's shift only. I need a tilt-shift lens in a bad way. For now, I'll purchase the Canon TS-E 17mm and the TS-E 24mm.