"Status match is back and this time, it’s even easier to experience Gold. If you have top-tier status in another airline OR a travel rewards program, you're halfway there..."
Send in proof of top tier status in another airline’s frequent flyer program, or travel rewards program, before September 23, 2016.
Take at least one WestJet flight between now and October 31, 2016 and you’ll be on your way to enjoying Gold flight benefits through December 2017.
Gold benefits:
Two free checked bags
Ten airport lounge passes
No fee for same-day flight changes requested at check-in
Advance boarding
Priority screening (at select airports)
Four advance seat selection vouchers
https://www.westjet.com/guest/en/rewards/get-gold.shtml