I guess sometimes both are true. Here is the link to the
CDC document (it's a pretty powerpoint, so easy to consume).
They reference an India study, which I assume is the rejected one, and the MA outbreak.
I'm still reading through it, but page 19 seems to have the salient facts for vaccinated people. Looks like more breakthrough cases, but hospitalizations and deaths are essentially static from the ancestral strain. No doubt for unvaccinated folks that the outcomes will be worse just due to increased transmissibility. The page 20 transmissibility chart is pretty interesting.