We were planning to introduce some out-of-game progression to this patch, but we didn't foresee the new menu taking so long to implement.
As per usual, Verde is making a community hub post with the full details of the patch, you can find a link to it here.
Additions
New Menu
Here to pave the road for what is to come
10 New Mutations
More about them in the detailed patch notes
5 New Steam Achievements
For obtaining all 110 mutations and winning the first 4 years without mutations