A new Vacation this year would actually make sense
I guess the Ed Helms "New Vacation" movie has been "delayed indefinitely", and I'm not too keen on the idea anyway. But it really makes sense to release another Vacation movie in 2013. Look at the pattern of the films:
Vacation (1983)
*2 year gap*
European Vacation (1985)
*4 year gap*
Christmas Vacation (1989)
*8 year gap*
Vegas Vacation (1997)
*16 year gap*
New Vacation (2013)