This is true but this is a work in progress. Right now this feature is not stable. I will keep you in touch. I think in May I may have something stable enough (I will work with Eliot on April) but it will not be on the default VM. It will be available in the default pharo VM at some point but not now (maybe in a year ?).

However, you may or may not be able to use it for your profiling tools. The idea is that you can get branch and send information from the previous executions of the method. However, the method needs to be cogged to have information available and once the cogged method is discarded the information is lost. It is really nice for hot spots but I don't know how it could work for a profiling tool.