My guess is that Diverse Records licenses individual records for vinyl release. Their catalogue looks like hand-picked stuff. It's likely the deal was made directly with Frank Black, not with Cooking Vinyl or Spinart (since Frank Black is the sole copyright holder of his post-1998 records).
When the label releasing the CD isn't interested in pressing vinyl, sometimes another label will want to do it. It's common. Whether or not they license future (or past) Frank Black records probably depends on how well Show Me Your Tears does.
at least its still done...you can keep your 7" singles and shove them...but a well replicated-from-tape-source LP is killer if you have the right turntables. classic expample, nirvana's "smell like teen spirit" LP vs. CD...yes, it is noticably punchier and clean on vinyl.
the cost between vinyl/CD is really noticable, especially when the sales of the vinyl is admittably less than CDs.
...and all you vinyl purists that "hate techno" oddly have the techno DJ culture to thank for more companies doing vinyl pressings at it getting a bit cheaper to do in the 90s. ;)