Global Cabin support?

On checking my account this morning i noticed something:

Does anyone what this 'offer' is and why i got it? It gave me 2 extra tier points + a few k in extra miles for my flight last week. Is this like a temporary thing or how long does this go on for?

Does anyone what this 'offer' is and why i got it? It gave me 2 extra tier points + a few k in extra miles for my flight last week. Is this like a temporary thing or how long does this go on for?