Form I-140

My EB2 priority date is June 2009. I filed for my I 485 in 2012 and since 2013 I have EAD and have been maintaining H1b status.
In 2014 I changed my job from the original employer who started my GC process (with whom I have I 140).
I sent AC21 when in 2016 I got the standard RFE to produce medical records and employment proof (since then the priority date had retrogressed again), and also have H-1B with my new employer. I have not started the new GC file with a new employer.
Should I file supplement J now, proactively, or should I wait for another RFE from USCIS when my priority date becomes current in the future, to file for supplement J?

My I-140 approved (India/EB2) from Employer A in June 2015, I joined Employer B in Oct 2016. Employer A sent revocation of my I-140, on USCIS website today is showing below status: "On December 7, 2016, we received your correspondence for Form I-140 ..." Will I still be eligible for 3 years of multiple H-1 extension with my approved I-140 from employer A without filing new I-140?

I have an approved I-140. My priority date is April 2011. Can I file for EAD on the basis of approved I-140?

Changing their employer from Company A (Current Primary Employer) to Company B (Direct Client of Company A - which will be the new primary employer going forward) - Can the experience earned by the person (skill set as well as number of years) earned with Company A be used for satisfying the job requirements of PERM / I-140 petition filed by Company B - if the person was actually working for the direct client i.e. Company B - all the time while employed by Company A (Current Petitioning Employer for approved I-140) ?

1) Is it true H-4 EAD rule will be revoked by the government? <br>
2) My H-1B visa is going to expire in 14-Jan-2018 and if my employer submits my PERM application in the month of June (i.e. before 6 months of my current 6 years of H-1B visa duration).<br>
a) If my PERM is not approved before my current H-1B visa expires. Can I change to H-4 EAD at that time?<br>
b) If my PERM approved after change to H-4 EAD, Can I change back to H-1B?<br>
c) Is it possible to convert from H-1 to H-4 EAD without taking a break in employment?<br>
d) If my PERM gets approved after my current H-1B expires can my employer file for H-1B extension?<br>
3) I would like to move to H-4 EAD but I would like to come back to H-1B anytime in future, in that situation what is the best status for H-1B?<br>
4) If I apply for new H-1B is it comes under H-1 quota (After 6 years completes.)?

I have an approved I-140 with priority date 2013 from employer A and my employer A is withdrawing it. I am going to apply I-140 with employer B now in regular processing and also porting the date. I will complete my 6 years of H-1 end of the year. Will I still be eligible for 3 years of H-1 extension with my approved I-140 from employer A?

I have approved 140, Green card EAD/AP card in EB2 from company-A and passed more that 180 days. I have maintained H-1B status since last 9 years instead of using EAD/AP as the need to go India for marriage so my future wife gets H-4 easily. Just transferred my H-1B to company-B. Company-A will revoke my I-140 in March 2017 due to company policy. I have following questions to ask you.<br>
1. Shall I get H-1B extension (beyond 6 yr) in future with company-B after I-140 revoke from my previous employer?<br>
2. I have EAD/AP card from my previous employer. Is it required to start GC process like labor and I-140 application again with company-B if my previous employer revokes my I-140?

How do we keep up with the rumors and changes in the laws? My I-140 is approved in 2013 and priority date is on 2013. Do you have any inside on country quota elimination bill?