Line6 mention/sell/explain just about every other aspect of its features and they’re not shy (nor lacking detail) about it - that would be a big deal and i’d have expected them to mention this if possible - sadly their documents don’t preclude it, which would have been even more exhaustive
i’m assuming helix or hx users would know if it’s in line6’s wheelhouse to deliver on midi sync’d looping - i’d guess not, but that’s not to say their latest product would lean on new tech if it’s cloning their earliest
otherwise it looks like a tempting offering
my take is that midi stability is the issue and therefore how a manufacturer handles the loop ‘crossover’ points would allow them to wax and wane the length to accommodate clock drift - or crossfade or elasticate etc
having midi sync is good (my original lexicon jamman has it) and it would offer a nice reason to justify a current looper if you have one of the majority without sync
it’s the reason i ended up not getting the ditto x4 (although it has midi ‘sync’) it’s only syncing the first generation of the then set-in-stone loop - if the clock varies thereafter, the loop will drift from sync - it otherwise had a useful feature set for my interests
the new dl4 does look promising and seems quite flexible and it’s of course primarily a delay unit and delay times are synced