If PACE act passes, USCUS interpretation!!!!!!
By this act(PACE) you have to apply after three years of job in (H1) New140- three to six month processing time, then 485 one year atleast processing time, I guess it will boil down the same. If you are lucky may be sooner. Again it depends on USCIS interpretation of residency and fellowship as advanced doctoral degreE earned in USA.
The other scenario which may help us get green card sooer, if USCIS allows, you will just need to get a new 140 approved( under PACE ACT) after three years on H1( if they agree your residency , fellowship is advanced doctoral degree) and then also agree to use the priority date from your previous 485 application. Eventhough there is no numerical limitation USCIS processing may take time and I am not sure how they will get to applications.
One thing for sure if this act passes and becomes a law as it is now after five years, you don't have to wait ( NIW EB2 physician) for actual green card because of non availability of EB numbers.