exactly, you only have to remember the dark eldar anger and the current leaping on any bad rumour ever from SOB fans to see what happens when you don't get round to updating an army.
and you are welcome
I -am-a Sisters player and I resemble/resent that remark!
Seriously though, there are a LOT of bad Sisters rumours out there.
I'm thinking the new approach with allow them to better handle the way Fantasy is produced and sold thus making it cheaper to update (3 books every 5 years, some supplements in the mean time which later get rolled into the new books...). Fantasy has been in a downward spiral since 8th so this will hopefully spice things up.