On top of that, there will be Borderless Viewport Lands, which are unique versions of the various Planet Lands with Station
This one cost sorcery has flashback for three so it's playable twice, and then it's a great first turn play, second-turn ramp or rock like Arcane Signet or Rampant Growth, third turn flashback
Also only appearing on the retro bonus sheet, this iconic mass pump probably wont drop the price much, but it does give an old border version for green players who are into that kind of thing
Illustrated by Zoltan Boros
(Quick answer: it's still 40.) Frank came back and actually talked about how many Lands to run in Commander, and in his normal way, he broke it down to some general assumptions and came up with a few basic answers
On top of that, you may also want to include some creatures that ramp such as Solemn Simulacrum , Burnished Hart, Palladium Myr, etc