I think those are good news because Robinhood is a very large platform so it will attract a lot of traders to crypto world. It will probably put a big fight to the current crypto exchanges, because as far as I know, Gdax is the only crypto exchange that also offer zero fees, and it's only available for "makers", and not "takers". Although it's easy to trade with no fees there, specially if you do swing trades, the ability to completely trade with no fees is much more appealing. To bad they only have a mobile service but it's still good.
As for how it will affect the price I don't know. The news are "old" now, so it won't have any impact on the price right now. It could if their current customers start buying crypto to trade, but it should have a small impact, because traders keep buying and selling, so we everything will stay the same.
I mean yeah the news is old now but once more and more news comes out saying that Robinhood is allowed to trade in more states then we should start seeing a bump in price and a bump in competiton in this marketplace. I'm expecting for GDAX to beef up their support and lower trading fees in order to fight with Robinhood over customers, cause I'd rather go with Robinhood if it was supported in my state.
Waiting to see some more reviews on their platform as GDAX as treated me well though. We'll see in time how it is!