Reportedly, they've found some symmetry issues with Lisi's theory.
"...Unfortunately, the consensus, after investigation, is that it is impossible to use E8 in the way Lisi was hoping and produce a consistent model that reflects reality."
The article linked above is very nearly content-free, and the author has a book to be released in less than two weeks. ...Rolls-eyes... Not a good first impression.
But I'll dig into the Physics Newsgroups (probably the ones linked in previous posts) in the next few weeks and see what I can decipher (if anything).
It'll be interesting to see Lisi's reaction to the consensus.