I think you are partial right, but I think that isn't stuff for the older classes. It is just stuff they too can use.
On the other hand, maybe you are alright and we will see new cleric at-wills and encounter attack powers that are not part of a domain...
And I highly doubt that were will be feats that require 'implement mastery' for example.
Does it really matter if new at-wills are part of a domain or not? Older classes can still take them.
I can understand the desire to have material that is
compatible with older classes, but
exclusive? That doesn't make any sense. There are already a ton of options that are exclusive to pre-E classes.
It sometimes feels like the anti-E crowd won't be happy unless or until WotC announces that they are completely forsaking Essentials and going back to producing only non-essentials material.
Not. Going. To. Happen.
And why should it? There are loads of folks who like to use both. Why can't we just live and let live?
It has already been
explicitly stated that they are not discontinuing support for older classes, and it's not being abandoned, but new stuff is new, and needs support more than old stuff with almost 3 years of exclusive support. You might have to wait a bit before you see a lot of it, but this book will contain some stuff you can use.
Maybe not exclusive, but there will be some.
You want something that requires implement mastery? You do realize that there are already 6 implement masteries to, what, 3 schools?
Oh, and all the old classes are getting updates, one a month (two in June, by their stated intent), for the next 5 months. If that doesn't make you happy, I don't know what will.