Adverbial has 2 senses

• up to now(r = adv.all) as yet, heretofore, hitherto, so far, thus far, til now, until now, yet - used in negative statement to describe a situation that has existed up to this point or up to the present time; "So far he hasn't called"; "the sun isn't up yet"
• up to now(r = adv.all) to date - prior to the present time; "no suspect has been found to date"