I know this goes in the "things I heard from a lego customer service rep" thread etc. However, I have been told by the reps from Lego customer service that the sandcrawler will continue through until the Winter at the end of 2016. I could be flamed for this... I can imagine the amount of information people have been told by lego employees that just turn out to be utter crap. However, I am under the impression that this one will be with us for a bit longer than anticipated.
EDIT: Having googled 'Winter months' like a noob, I think that winter (December, January, February) could mean that it is in the process of being phased out now)....
Thanks guys!