Absolutely. I find it extremely encouraging news, despite our government's slightly panicky looking press conference tonight, where they more or less said 'stop getting your hopes up'.
It could be months before people get the opportunity for a vaccine, it could be that this isn't as effective or as safe as thought, it could be that someone (eyes the golfing Trump suspiciously) has already bought up and ringfenced the first 600 million doses. But the fact that one of the developers has been confident enough to make this claim, and that science has come up with something in probably record time, is extremely hopeful. This is a RNA-based vaccine, too, which makes it another world first, likely to be the first such vaccine approved for use on humans. This technology has taken a huge leap forward. RNA vaccines are expected to be faster and cheaper to produce and could have a major impact on medicine worldwide.