Both will be limited editions? (NOTVD) editions are impossible to find... 
.
As mentioned above, yes:
In
The Shadows will be released on 180 g black vinyl as well as on purple blue marbled vinyl (ltd. 300) and old oak marbled vinyl (ltd. 200).
Time will be released on 180 g black vinyl as well as on bone colored vinyl (ltd. 300) and bronze marbled vinyl (ltd. 200).
Just pre-ordered the bone colored
Time and the old oak marbled
In the Shadows.
The
Into The Unknown and
Time Night Of The Vinyl Dead releases are indeed very rare. I have both in my collection.

Metal Blade will release more Mercyul Fate vinyl in october. I think (not confirmed) Into The Unkown will be one of those titles.