I think for most people with medium-to-large sized ears, the existing Momentums ARE on-ears! LOL. Twas the only reason I traded mine away.
I've got huge head and above average ears and to me the Momentums are somewhere inbetween circumaural and over-ear. They fit very nicely around my ears but there's no way the ears could totally go inside. One of my favorite headphones.
No kidding. Why the hell didn't they come up with an actual around-ear Momentum instead
For those quite a few have voiced out the inner space ear pad of Momentum original version too small to fit in, I'm afraid it would getting worse for the issue this time, For me, the Momentum original version just fits me with no problem and I'd also looking forward to see the new model, both the look and the SOUND as well.
I've read a lot of things about the original Momehntum but I've got to hand it to Sennheiser for trying to expand their products to the average consumer in terms of appearance. I for one am stoked about seeing their new colours in-person, let alone get a chance to listen to them. People complained about the originals being on-ear so perhaps making a real on-ear earpad design will help with the comfort. People also complained about the originals being too bulky to recommend for a portable headphone so maybe this smaller design was a response to that as well.
Very interesting indeed. I look forward to peoples' impressions.