I hope not..... I don't want to see Ludger X Elle (no lolicon pls) and Ludger X Milla seems not plausible as she is reserved to Jude. The only most plausible (if there is at all) is Ludger X Nova but I doubt anyone would be interested in that pairing.
New Milla or not, all the promotional items have been pairing them up. Doubt fans would be pleased if it switched to Ludger, Not to say it is impossible but very improbable.
I haven't seen any promotional item pairing jude with the new Milla, and I would prefer if this new Milla stays with Ludger, I think they look like a better couple than Jude x Milla, of course, that's only my opinion