Is this a free update for the customers of the E175 v2.5 and E195 v2.5?

These are completely new add-ons, not updates of the current E175 v2.5 and E195 v2.5. Therefore this will not be an upgrade, but existing customers of the E175 v2.5 and E195 v2.5 will get a discount.

What will the discount be for existing customers?

The level of discount is not yet determined, but I always strive to make a fair deal for everyone. I hate being treated unfairly as a customer, so I would hate it even more if any of my own customers felt that way.

Will it be study level?

I actively try to avoid the term "study level", for the simple reason that it is very relative. Everyone considers study level to be something else, and I want to avoid confusion at all cost.

On release, we will provide a detailed description of all systems and features simulated, as well as videos and other content that will highlight the level of simulation. That way, everyone will decide for themselves.

But to give you the short answer: I believe that most users will find that these will be highly authentic.

Will it have an authentic FMS?

Yes, these add-ons will feature a custom FMS that will function and feel very much like the real thing.