Well I'm pessimistic about Larian's ability to implement monks period. They already gave step of the wind to everyone for free, patient defense (dodge) hasn't been implemented but I have little reason to believe it won't be a bonus action for everyone as well. I'm fairly certain that shadow step will be nerfed in the name of game balance, which makes shadow monks much worse. On the flip side they might actually fix four elements monks, but I won't be holding my breath.
What makes you think that they are going to nerf shadowstep?
At most it gives you double the range of dash for movement speed for the cost of a bonus action. It's also already dependent on where shadows/dim light are located. Also, everyone already gets free advantage, so I doubt they'd remove that. I don't really see where there would be cause for nerfs.