A quick follow-up to my earlier post...
Unless they've changed their policy, B&M won't build coasters taller than 230 feet, due to the supports they use, among other reasons. I've been told this by numerous Cedar Fair, Busch, and Six Flags managerial-types over the past 7 years. (I've been told that CF wanted Behemoth and Diamondback to be taller than they are.) The fact that the biggest B&M's out there are only 230' substantiates this claim. The biggest thing to remember is that B&M is a VERY small company, who fiercely prides themselves in the products they provide. What you see is what you get, and you won't find more reliable coasters out there besides wood (B&M Flyers being a little more finnicky). This is a big reason why they command such premium prices on their rides. You pay for the B&M brand, but also the quality. They'll customize their rides to a certain level, but essentially if you want something beyond their "niche," they will politely send you to another company. Don't believe me? Ask yourself this: how many launched coasters have B&M done? The Hulk at IOA, and they simply built the ride. The launch portion was designed by another company, of which B&M didn't support.
I worked as an Intern for B&M sometime back. I loved every (INTENSE) minute of it, but sadly went without a full-time job designing coasters like I wanted, and I tried EVERY company out there. I got close to getting a job with S&S designing woodies, but it didn't work out. I also worked at KD under Paramount (PKD) for 5 years, starting out as a ride-op and moving up to a year in mid-level management before quitting to my current career outside the industry. Now I just ride for fun.
I can assure you based on my past experience that Busch has an exclusivity contract with B&M, and that as company policy, B&M keeps the details of those contracts quiet, including duration of time and how exclusive (ie, the mileage of the "no-build" area around a park.) Companies inquiring about building B&M models under exclusivity contracts with rivals are simply told that B&M is unable to sell them specific models at that time. KD falls under the area of exclusivity for BGE, and I believe Six Flags America does as well. So again, Busch builds a B&M ride under the agreement that B&M won't build a similar model within a certain distance from (X) park for a certain number of years. Busch pays a high premium for this exclusivity, and they're the only company I know of who does such a thing.
You can confirm such a contract by talking to B&M personnel at IAPPA (Claude goes most often, or used to anyway), or even easier by talking to mid and upper-level management at BGE and KD. KD loves to tell people that they can't build B&M's.
I'm probably opening myself up to flame attacks by posting this, so please don't think I'm bragging, talking out of my ass, or being a know-it-all. I know how passionate we enthusiasts are about coasters and the industry in general, and just thought I'd mention a couple of fun details. I don't know specific details on the 2010 KD coaster, just rumors I get told by KD employees...some of them old friends I used to work with who are still there and have moved up in the company.