In my area, Malifaux's just appeared in the local gaming shops recently, so it appears to be growing. Of course, my area tends to be a bit behind the times, so that comes with a 5lb bag of salt.
I'd say that there's two reasons for the recent slowdown in Malifaux releases:
1) Distraction - Getting the RPG rolling has sidetracked them somewhat (and is converting PuppetWars to plastics something they just did, or has it been a while?)
2) I've heard that there was some sort of problem with the plastics company in China, and that a new company is being brought online to crank out sprues. While I'm sure there's plenty of companies in China that can do the job, it may take a little time to find one satisfactory and get a deal worked out. Depending on the problem they had, they may be seeking extra assurances from the new company.