It isn't a yes, no, zero.... We know that it does well against the alpha, the beta and the delta and it does modestly well against the omicron one. Omicron doesn't do well against any of the others. They come from two different phylogenetic trees. The big thing we worry about is that the delta and the omicron are going to come back together, and that will be a mess.
On June 1st, 2022. See this statement in context.