Nooooo, I like them separate!
I would imagine you will be able to still access them separately, same as on BB - except there will also be this
optional 'hub' that will compile them together.
The big question however will be how will the hub support third party services outside of Samsung stock apps. So if you get your email via Outlook or Gmail apps, will it be accessible ? Will Facebook / WhatsApp or other third party SMS like Textra & Google messaging be supported ?
If it is restricted to stock apps and essentially 'notifications' then it really will be just another feature your unlikely to use outside of the initial week you get your device whilst your still in the 'novelty' period.