Somnium and Humidity are still in print. When those run out of copies, we will discuss with Robert whether he wants to re-press them, and if so, we would be in favor of digipak releases. Also we know Robert himself likes the digipak format, as evidenced by his latest album Ylang.
As for Sunyata and Inner Landscapes, we planned to let those "rest" out of print for a while and see what demand looks like. I'd like to talk to Robert at some point about possibly reissuing these, and as I said above, if we do it, the format will probably be digipak.