I don't think anyone is that sure there will be a vaccine but there is some promising work being done, I believe there are around 70 different vaccines being developed ATM.

One that looks like it may work is from an Israeli group working on a milder corona virus that seems to use the same spiked protiens as the one killing everyone and there is hope that once infected with milder one, the bodies immune system will be able to fight off the deadlier one too.

I makes me wonder, scary as it is, that is if the milder virus can make us immune would it be worth the risk releasing a live version into the population? This would greatly reduce the time required to produce and distribute a life saving vaccine and effectively make it free for everyone.