I don't think the UCI will contest anything. With the whole world looking at them, they will adhere to the USADA judgement.
They need to address investigating other riders, non-US riders, implicated in the report and what may happen. I'm thinking in particular, Paolo Savoldelli. They have an obligation to investigate given they have evidence of drgu taking.
I think they will announce something more, something likely a bit vague but an attempt to show they can address UCI past failures to deal with this era, or to just wider investigate and acknowledge what happened in the peloton.