If you join NOW, your Caesars status is valid until end of this expiry year, which is 31 January 2017. BUT, if Caesars renews with FoundersCard your membership will be extended (valid) until 31 January 2018.
The "catch" is that Caesars does not renew with FoundersCard until December 2016 or January 2017. Is it a guarantee, NO. Is it highly likely, yes.
So, in essence, your membership purchased NOW should be good until 31 January 2018. But, that is contingent on Caesars renewing the program with FoundersCard.
This isn't just limited to Caesars. Same deal with Hilton or any of the other membership features. They are all renewed on a yearly basis.
Unfortunately, nobody can guarantee the renewal of Caesars in the FoundersCard program. But, it's been consistent for the past few years...
Perhaps, you have to decide if you want to "roll the dice."
