4.5 years later, everything is exactly the same:
http://yabb.jriver.com/interact/index.php?topic=48731.0
I follow new music pretty closely, and as a result I rip a lot of CDs that have only been out for a few weeks or months. To be clear these are professionally made CDs, from music labels, with UPCs, not home-made Cd-Rs or local micro-label releases . My hit rate with YABD is about 50/50 (half the time the CD lookup finds mostly complete, correct information, half the time it finds nothing or info too incomplete to be useful). And it's almost always missing a few pieces of standard metadata, i.e. date/year is missing 90% of the time, but that's an easy fix even for me
My workaround isn't ideal, but I've found that the default lookup databases in Windows Media Player are more complete (around a 95% hit-rate and more metadata is usually included). So my usual methodology when I get nothing from JRiver's lookup is to just rip the CD in WMP; then JRiver picks up the correctly tagged files afterwards.
WMP's ripping module isn't as nice as JRiver's, but it's a fast and easy workaround that solves the vast majority of my problems with incomplete tag info in JRiver. My experience is that the same holds true for look up of tracks already in the library (the WMP databases have more and better info than YADB).
It's probably not as clean a solution as the one Kstuart suggested, but it's free and easy.