I find the Air France/KLM FlyingBlue program to be pretty useful, especially since the program is transfer partners with all major transferable points currencies. So the points are pretty easy to accrue, and FlyingBlue is reasonably good about opening up Air France and KLM business class award availability for their own members.
Recently FlyingBlue extended how far in advance you can redeem miles — previously you could only redeem miles at most 305 days out, while now they let you redeem miles 360 days out. That’s a great development, especially as the old system made no sense — members of partner airline frequent flyer programs had access to Air France and KLM award seats before the airlines’ own members did.
Well, FlyingBlue has just announced another improvement. It’s fairly minor in the grand scheme of things, though still worth pointing out. As of March 15, 2017, FlyingBlue miles expire after 24 months of inactivity, rather than after 20 months of inactivity.