HR would definitely ask and talk with your supervisor even you are eligible for the GC policy in your company. EB-1B would ask this position is like "permanent" job. that' why your supervisor would like to discuss it 1 year later. You are fresh in this company. Both your supervisor and HR might think you are regarding this place as start-up,then jump after 485 has been filed. anyway, it does not hurt if you just ask HR manager for the policy.