CSS Layout Generator - changed.... when?

The layout generator page indicates that the generator has "...changed significantly from previous versions...". am i missing a date there somewhere, or is it not listed when it was last changed? i'm trying to figure out if my most recent generated layout was previous to those changes.

also, i don't know if it's specifically indicated as so somewhere in the personal profile description, or elsewhere, but i recall the last time i generated a layout that i could still download previous layouts from almost a year ago. is there a way to access those saved layouts w/out going through the layout generation process?

thanks!