As of April (see their Blog entry), the statistical stuff is online as a Beta version. Language pairs labeled 'beta' appear to be the new stuff. Side-by-side comparison shows it is definitely not Systran. Language Weaver doesn't have an online free tool like Systran, so I couldn't do a side-by-side comparison. I've been scouring the literature to see if they've published anything on what changes they've made to their system since the NIST eval, but I haven't found any info yet.