A quote from the about page of this initiative's website makes it clear that the "holograms" being proposed here feature "controlled matter". Thus it seems highly likely that Itskov is referring to programmable matter along the lines of claytronics or utility fog.

Today it is hard to imagine a future when bodies consisting of nanorobots will become affordable and capable of taking any form. It is also hard to imagine body holograms featuring controlled matter. One thing is clear however: humanity, for the first time in its history, will make a fully managed evolutionary transition and eventually become a new species. Moreover, prerequisites for a large-scale expansion into outer space will be created as well.

(emphasis added)