No it's not ending, at least not according to what I heard. The current-member's promo ends this Friday, I believe. We just signed up last Friday and I was told that was the last day for the cash-back w/points available June 1st this year. The cash-back is still available but now it will be with August 1st points. Also, the cash back depends on how many points you buy, with $1500 being the minimum (I think).
Hope that helps...if you have any other questions I'll try to help!