The guidelines definitely haven't changed as has been said by the PPs.

There are a lot of things to consider when making the decision when to start, and with so much conflicting information around it is really hard to know what to do. In the end, what it came down to for me, was that the risks of starting too early far outweigh the risks of starting later. With my boys DS1 was definitely not ready before 6 months, in fact I don't think he was ready until about 9 months and I wish I hadn't tried so hard to get him to eat earlier. DS2 was more than likely ready before 6 months, but starting at 6 months with BLS worked really well for him and he has been a fantastic eater ever since (he even asked to have peas and carrots for dinner the other night!!). If only DS1 was as good!!