How much of this can help jailbreakers? I don't understand technical aspect of this thing, so if someone would like to explain I will appreciate it. Thanks.
That is a good news than.
I hope they can get it nicely done and I hope community can prove JB is not about piracy but rather customizing and running tweak apps.
Good luck with that! The reality is that the bulk of the support for jailbreaking is because it allows people to pirate apps. Without those people, who are probably 90% of the jailbreak community, jailbreaking would not exist; there simply wouldn't be enough demand. Your personal reasons for jailbreaking are not relevant to the larger reality.