Here is an article on what NASA had been doing before Musk ever announced his suit.
These suits actually work and in many ways share profile similarities with the virtual concept art you showed.
If memory serves, though, this particular iteration required custom tailoring to their owning astronaut which would be contrary to SpaceX's mission. Though I don't know if they have since fixed it with this latest unveiling.
When it comes to suit design it's not necessarily a question of whether the materials are present; it's more to do with whether the level of engineering is up to the task. The literal army of engineers that go into designing each and every aspect of these suits is unfathomable and very reminiscent of the army of engineers it takes to get a vehicle into orbit (if not more so at this point).
For SpaceX to take a concept consumer grade production version of a form that has taken NASA over 60 years to reach in the span of a few years is a bit hard to believe unless they copy a bunch of it. Is it possible, sure. I just wouldn't hold my breath for space vacations just yet, at the very least 5 years out.