you should know that there's never any eta's in this business. about a month or two ago, musclenerd tweeted that he dumped the 4S baseband. I've heard this means an unlock is very likely, but mn has recently said anyone wanting an /eventual/ unlock to stay on 5.0. so in my opinion, it sounds like he has all the exploits he needs, all he needs to do now is develop the payload and injection methods. so sounds like 4S 5.0 bb will get an unlock