Вот что они там пишут:

Dear IL-2 fans,

Unusual Tuesday update today.

We would like to post the PDF user guide that will be included with the 4.10 patch. We feel that now the content of the guide is stable enough and this will be the final version.

Unfortunately we couldn't host the file anywhere yet, so it is included now here as attachment (login required). Hopefully we can provide direct links soon.

Как я понял, содержимое патча уже устаканено, и менятся не будет, то есть, что описано в ПДФ, то и будет.