Most of my planets lately are extreme cold. I don't mind to much because I want the extreme survival achievements.
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I think they made some resources scarcer even in normal because they are trying to encourage crafting. Where you craft the item to power your stuff rather then the raw resources. Though launch thrusters and early game (since you won't have the ability to craft as much) are still easier with raw resources. I've still found a lot of mountainous planets though so it might just be luck. Or whatever even they changed in the seed for Foundation has more of the same types along paths since I encounter stuff a lot that others are saying are rare for them.
Also the 1.13 notes are out http://www.no-mans-sky.com/2016/12/patch-1-13/
http://nomanssky.gamepedia.com/Resource is a website I just found. Not sure how great it is but it at least has the new foundation resources on its resource list.