Okay, haven't heard much, but thought it might be worth mentioning.
http://www.tv.com/code-lyoko/show/26269 ... /msgs.html
That's where I first heard of it, so I followed it up on Kabillion, and got this. It is mostly stuff from the fourth season, but check out the end.
http://www.kabillion.com/codelyoko/pspps2/
Could someone check the Code Lyoko French website, CL.Fr? I can't read french, and someone said there was info there.
While admittedly it sounds like a fan project, there are signs that it's not, such as the professional-looking artwork, and the Kabillion video.
From the promotional artwork that I've seen, there is an overriding theme: The Lyoko Warriors dissolving into particles.
Here's a poaster for it, and it seems to show the titles for some of the stuff. The LTT people should be excited about number one: "The Carthage Project."
http://www.its-me.fr/images/img/clr_03.jpg