The OP was not clear what he was asking. Unless things have changed, there are 3 sorts of upgrades, I think.

1). Free Upgrades by asking at the desk -- If they wish to do so, go for it, but I don't think they are obligated, at all.

2). Guaranteed Suite Upgrade Certs -- no.

3). Upgrade using your GP points -- does this still exist? -- if so, I don't see why this would not obtain.

However, I think the OP was asking about # 2 and as Peter pointed out -- for the umpteenth time since it is clearly written in the rules of use for such upgrades -- NO!