Grzrd, I'm still shaking my head (though I can still admire a genuine optimist) about the I-49 proponent from Shreveport who said that he's working to find ways to make this happen in 10, and maybe
FIVE years.
That being said, I agree...with the BV bypass scheduled for completion in 2016, any spot along I-49 south of Joplin is immediately opened up to the entire northern U.S. and Canada by our existing interstate system. With the man in the Arkansas Business article predicting that Fort Smith will be "unrecognizeable"* in five years (and he has to mean that part of it where I-49 goes) there certainly are people who think at least part of this FSM to Texarkana route is going to happen sooner rather than later. (BTW, today it was announced that Thermold Industries, a firearms manufacturer, is moving their HQ from North Carolina to Fort Smith. I think, though, they'll be in "old" Fort Smith along Wheeler Avenue, on the southwest side of town near the Oklahoma border. At least, for now.

*My hometown of Springfield Missouri hasn't changed much in parts of the north side. On the SOUTH side, where the James River Freeway was built connecting Interstate 44 with U.S. 65 to Branson and U.S. 60 to West Plains, Jonesboro and Memphis, it looks like a different city. That's what will happen in east Fort Smith.