Yup, people have started submitting claims. Just read the gox site.
Also, just received an email regarding that - they said they offered anyone who claimed something among the lines of a "transaction fees coupon".
I have had no email from gox do you mean kraken emailed you ?
I did my claim last night. In my case I received a promotional email from Kraken about the fees coupon and in that email it mentioned Gox Claim initiation. I kicked off the claim process from within the Kraken site.