We're certainly not getting any more new Pokemon beyond what was seen in the datamine. However, it is worth noting that as far as I know this leak is still going strong
Since neither Arbok nor Dodrio exists in the Alolan Dex (the only part of the dex we have graphics for) there is always the possibility that they appear in the National Dex with Alolan forms. However, I don't see that as hugely likely and the only reason I purport any likeliehood of it at all is because of this leak. Other than that though, what we've seen is certainly what we get.
Since neither Arbok nor Dodrio exists in the Alolan Dex (the only part of the dex we have graphics for) there is always the possibility that they appear in the National Dex with Alolan forms. However, I don't see that as hugely likely and the only reason I purport any likeliehood of it at all is because of this leak. Other than that though, what we've seen is certainly what we get.