Lavalier microphone development seems to be pretty much evolutionary, rather than revolutionary. No earth-shattering design or capability changes are really predictable, as far as I can tell. The arc of development consists of refinements and improvements: smaller, better sounding, lower-power demand and so on. DPA as a company has been focused on close miking in various applications for some 60 years, since being born out of pioneering measurement microphone developer (among other things) Brüel & Kjær.