Hello,
I couldn't find a post on this so I'll tentatively start one here.
I received a very generous offer from SPG called "Let's Double up" as follows:
THE REWARDS KEEP ADDING UP WITH SPG. We've created a special offer just for you. Register through March 31, 2018, for this exclusive opportunity to double up your rewards with SPGŪ by receiving double elite qualifying stays and nights.
T&Cs are here.
Very happy with it, actually gives me a good reason to finally try a few Starwood properties in Singapore: Westin, W Sensota and Le Meridien Sentosa!
Julien