The toy does exist, as Hasbro had boxed samples of it beside Superion in their "store exclusive display". However, it hasn't been released yet, as all cases of the current "combiner" assortment just contain 4 copies of Superion. This is just speculation on my part, but I'm wondering if Bruticus might come out near the end of June. Close to the opening of RotF would be a good time for stores to have some exclusives out to capitalize on public interest. For instance, we know the TRU-exclusive Bludgeon/Whirl set is due to come out on June 21st. Also, I've seen a few people mention that some Target stores had their Superion cases labelled with a June 21st street date, so maybe there's another wave of the combiner assortment intended to come out that day (ie - Bruticus) and some Superion figures ended up in boxes with the wrong date. Giving a month between combiners would also allow the Superions to clear off the shelves before Bruticus shows up and maybe avoid the massive pile of discounted figures that usually happens with Target exclusives. Like I say, just theorizing; no one really knows at this point.
The combiners are an assortment anyway. Superion is just Wave 1, Bruticus will probably hit later in Wave 2.
BBTS has it in stock now. Transformers Universe Bruticus Maximus - Transformers Universe - 2008 - 2009 Box Sets at BigBadToyStore
HAHAHAHAHAHAHAHA!!! Pathetic Sage. I've had my Bruticus since Christmas. But whatever. Have fun trying to find him.