The new drug similar to Humira might be Tysabri, it's not really new but it's newly approved for Chron's; newly approved as approved a few weeks ago! It can cause sudden brain infections or whatever and severely disable or kill you though, so it's only available through a specially monitored clinical program. It's also supposedly like $2800 for each month's infusion so if your insurance doesn't cover it I don't know anyone who could afford that on their own.
Another drug is Leukine, also not new but newly in testing for treating Crohn's, it's only in stage 2 clinical trials right now so it'll probably be a while before that one is used for Crohn's.
There is another drug in stage 3 clinical trials called Certoilzumab Pegol, I believe you have to complete stage 4 clinical trials before a medicine can be approved, but am not sure. The drug supposedly works well and is tolerated well but there is no data comparing it to the other similar drugs like Humira yet, so who knows if it'll be a "better" drug or just another similar one so there are more choices. Either way it sounds pretty promising so I hope we have another medication available to try eventually.