If you are talking about the big brands, yeah, stuck, look at Korg, the last 3-4 years re-hash of EVERYTHING over and over again, boooring, the most interesting they've churned out is the *Logue synths, where of they killed the master piece, the Prologue, which if it was due to not meeting their sales expectations, then imho was their own fault trying to sell it as a polyphonic analogue instead of teaching potential users about how amazing the Multi Oscillator concept is, did anyone say Positioning, not at Korg obviously... And yeah, not innovation per se, mixing digital with analog, but very well done wtih an open SDK for creating own pieces of software to put in there...
Yamaha, where shall I start... They take the safe road and probably make quite a bunch of safe money on that, anyone said Toyota?
Roland, well, they've done good with their multiplatform strategy, some interesting stuff going on there, though synthesis wise, no cigar, even if I do like the fact that they have implemented a pretty smart way of adapting your hardware to your own needs with their software/plugouts, or whatever other platform (boutique) one chooses.
Kurzweil, looking forward to their next iteration, though I got a feeling it's not going to be rocket science, more of the Yamaha strategy, well designed workhorses, revamped for another 5-10 years on the market.
And Clavia/Nord, looks to me they have found a loyal customer base to churn out new iterations too as well, seems the Nord Wave 2 was their last "monster" of sort that kind of stood out, will be interesting to see if anything interesting pops up there in the near future as well..
But for everything else, well, there's a LOT going on, around the more commercial brands, I'm a fan of Modal, and the ASM machines are not boring either, waiting with excitement on Novation to see what their next strike will be, time for a successor to the PEAK/Summit platform soon, and also, Erica synths are doing some very nice stuff too!