Does anyone have any exprience with both high aspect 500 paddle from last year and the high aspect size 'M' from this year?

I have the 500 from 2013 and thinking of replacing it with the 2014 size 'M' (according to SB latest catalogue size m is ,more or less, the same as the 500 from last year.
I took some pictures to compare them ans saw that the new blade is shorter and narrower.
Also the angle of the most recent version is smaller.

cheers,

charlie