Data Integrator - versions & Upgrade guide

Hello, I'm the BO-related products adminitrator and I'm looking for some information about new versions & updates for the BO-products.

At the moment we use the BO Data Integrator version 11.5 (and BOE XI R2).

We have the license for the BO Data Integrator Professional 3.0, so for that reason I am looking for:

- list of the changes in that version

- upgrade guide from our version to this new version (is it a minor or major update?)

Also, I have seen that there is another version (11.7). I would like to get more information about this version (is it a minor update?)

I have noticed that there is also a 3.1 version of Data Integrator. Is this release related to BO Enterprise? I mean, we are planning to upgrade from XI R2 to R3.1. Does the R3.x platform works with the BO R2 platform?

Thank you!

Álex