Yes, I also got last night, they sent on Sept 8. The date starts from the card printed date on 8/24/2015 to 12/31/2016. The 18 months counted from June 24,2015.

However, I have not received any mail for TPS decision. I don't understand why they sent EAD before and they even say, if TPS is denied, EAD will be cancelled. Crazy US immigration rules.