T-Rex did a really nice tape delay module some time back: https://www.modulargrid.net/e/other-unknown-t-rex-replicator- Basically, it's a Euro version of their Replicator tape delay box with a few extra tricks. Don't hold your breath waiting for Boss, though; Roland's had this long-running (and very, VERY dumb!) semi-policy of not revisiting their older designs unless they can do their meh-grade circuit modeling on them. Even right now, the Roland 500 series isn't made by Roland...it's actually all Malekko's design and build-work. As opposed to Korg (who I still say f**ked up massively on their ARP 2600 reissue nonsense!) who have no problem bringing back older stuff that worked, Roland is so far up this digital modeling bunghole that even their major new synths are pretty questionable, IMHO.
True about Fulltone, tho...I have one of their original Supa-Trem2 boxes, and I think it's one of the finer examples of that sort of thing, well worth having in Eurorack, but they don't even have that as an active model right now. They just have the redone version. I'd love to have that sort of stereo modulation in a synth, but like many guitar stompbox makers, they're still fascinated with that market. Sorta sad, really, when you consider how many Eurorack makers (and which ones!) came out of the stompbox arena.