I have always thought that communicating to sony about a serious bug is not good for the sceners themselves because it is increasingly difficult, a donation of $ 1 per year to access a webkit is much better for a scener and the end user, more money for development and sony does not cover the bugs, it is my thought
A dount a jailbreak is any closer then it was before this update.
This mearly means it is possible. But honestly jailbreaks are always "possible". It all depends if sony decides to publish the data. Also it depends on the amazing devs we have to take it on themselves to develop the break.