It was already announced at D23 that he's playing Kade Auberon. Not saying they can't do tie-ins with an original character, or later reveal a connection.
But the fact it's Kade and not Cade makes it unlikely there will be a direct reference.
I'd never heard of cade skywalker. But he was 130 years after the original trilogy so I'm for it. If they want a clean slate to work with that's what they should have done from the start instead of shitting all over the EU and the new republic Leia and Mon Mothma built.