Hi there,Sorry, I'm moving to another state in just two more days and I've not been visiting this board much - I apologize for the delay.
Yes, Fimo has begun recommending 230º - but I'm hearing from a lot of people that they're curing at 265º.
Someone at EF actually told a customer that they're lowering the temperature because of liability issues. An experienced clayer knows that they should cure at 265º and not to go much higher than that. I would say to go ahead and cure at the normal 265º - I don't trust 230 - maybe it's just me being old and set in my ways. 
Have fun!
Elizabeth
Discussion Board Host, PCE