Caveat noted!Caveat. I am not a playtester
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As far as classes go, if they are splitting skills and feats off into seperate silos then yes, as in 4e I would expect classes to be primarily focused on how you kill people, as it has always been really. But not exclusively.
The "not exclusively" is key here, I guess.
Historically, a number of spells have concerned exploration and interaction: MU spells like knock, fly (in some uses), charm (in some uses), passwall, dig, transmute rock to mud (in some uses), etc; and a bunch of clerical and magical divinations. I've been assuming that in D&Dnext these will continue to be class abilities. It would be interesting if they took some version of the ritual caster approach instead, and made them occupy the same PC build space as skills (thereby opening them up to traditionally non-spell-using classes, as in 4e).
In 3E and 4e there are silo crossovers in the other direction, too (though maybe not as many). Athletics/jumping, for example, is important for mobility in combat as well as in exploration, and Intimidate and Stealth also have combat as well as social/exploration uses.
It will be interesting to see the details.