As I have now left AUT, I have moved OPTI into our start-up company. This change means very little for the OPTI community, other than a new web address, and the mailing list has been deleted. I've also taken the chance to change the Wiki skin for a bit of variation.
One change to note however is that GitHub will become the primary download location for OPTI (including MEX files) - no more download forms for the open source version. For Academic users, a patch will be provided (asap) to add SCIP. More details to follow.