Hi, i received the official answer from the Offensive-Security Team.
Answer:
Thank you for contacting us. The difference between BT4 and BT5 is minor regarding the PWB course materials. There is no plan for upgrading the course materials in the near future.
Note: Sorry for my bad english, i'm from Dominican Republic and english isn't my first language
Hi, i'm new in the community i used to read some post but i never comment. Now i need some help. I saw on Offensive security web page that back track 5 is comming out soon, i just want to know if with the new version of BT is comming out too a new version of Pentesting with BackTrack course.