Definitely far off from their early Fungus Amongus sound, but as their sound evolves, I find myself still a fan. Based on the comments left on youtube and myspace, it seems "Black Heart Inertia" is receiving mixed reviews from the Incubus fanbase. Why don't you watch the vid and take a listen for yourself?
And don't forget to pre-order your copy of Monuments and Melodies, because when you pre-order, you get a special code for pre-sale tickets to their upcoming tour. Just make sure you pre-order at least 24hrs before the pre-sale starts for the show you're trying to see. Go here for more information regarding pre-sale dates. Don't slack, because tickets have already gone on sale!