> What about the documentation. Will there be a PDF file, official book or books?
Hi Denis,

The help as a PDF is already available on the website as separate download. The help file inside VS/XIDE is maintained updated as features are added or otherwise time permits. There is also a guy (Alwyn Bramley-Jenny) that wrote a book for Vulcan that is practically 95% X#. He might convert it to X# where it differs.

I assume you French speaking, maybe you want to also look at xsharp.fr, it is hosted by Fabrice Foray who is a lecturer at a French University and responsible for the X# Visual Studio integration.