Right now, 14 wiktionaries qualify ( ar, de, el, en, fa, ga, ja, jv, ko, mr, pt, si, tr, yi )
Right now, 5 wikisources qualify ( bn, it, ml, nl, pa )
Right now, 33 wikipedias qualify ( als, ang, ay, be_x_old, bh, bxr, cs, csb, dty, dv, eml, frp, ga, gl, hif, ht, kl, ku, lmo, mai, nds, nds_nl, nv, or, pa, pcd, sa, si, stq, vec, vo )
Right now, 2 wikibooks qualify ( fi, sq )
I plan to make this switch for these ~40 wikis on May 16th. If someone felt motivated to fix a few templates / pages in the linter categories with a lot of entries, we might be able to get more wikis transitioned over sooner. I have noticed that on all but the large wikis, fixing a few templates almost always fixes lots of pages and greatly brings down the linter counts.