New fluff & stuff
A new trend I've been seeing with Komplete since version 9 is more of an emphasis on new packs and less on new instruments, which I'm not the biggest fan of (especially as someone who likes to sound design a significant portion of stuff). Presets and packs have their place though... so I'm not COMPLETELY against the trend... =P
Version 12 gave me hopes when new versions of Kontakt & Massive were announced. Kontakt 6 has raised the bar in terms of CPU efficiency (yay for higher track counts without needing new computer hardware... LOLOL). Nothing revolutionary for most musicians, though back end guys who love to script their own instruments will probably LOVE creator's tools (at the expense of backwards compatibility; it's not a surprising move from NI).
The Massive X workflow has been a slight mind-fuck for me (I guess I'm just really used to the original Massive). The new oscillators are cool too. Overall, Massive X isn't a complete fail to me. I just think it got released way too early, and NI has done what it can to recover (e.g. better CPU optimization, ADSR envelopes that give you graphical feedback like in the old Massive, etc). I can't believe there's STILL no way to import your own wavetables though. Whatever.