Hilton HHonors has brought back the offer for stays counting for the current and the following membership year until December 31, 2016.
Members that have this offer assigned to their accounts can start earning stays that count towards their 2018 status today. Hilton has had this same promotion for the past couple of years.
You can check if your account is targeted for this offer here.
Note that there is no landing page on Hilton’s website for this offer. You must first sign in to your account and there is a note below your account activity showing this offer IF you are targeted.
Remember that this offer is based on STAYS and not on NIGHTS. Only the STAYS count towards the 2018 status.
Hilton HHonors here tries to make sure that members continue staying at their properties beyond meeting the qualification criteria by offering to count the STAYS for the following membership year.
This offer didn’t appear under my account and I am not sure how widespread this promotion is.