Maybe, but knowing the ease of sudo, I really hate using runas. Most of the time, I just want plain old admin privileges. Mostly I don't care whether I can impersonate another user with this.
Given what MS did to powershell to make *nix commands like ls work (i.e. make them plain aliases to the equivalent powershell commands without any attempt to convert flags) I wouldn't get my hopes up. (Nothing could have prepared me for the disappointment of typing ls -l and getting an error.)
I hate to be a pessimist but $20 says they're just making it so they can technically claim that Windows supports commands Linux users are used to and therefore that Linux users should have no trouble in a Windows environment.
runas is trash, to be honest. I've been waiting 30 years for an OS-native tool that allows me to delegate specific commands for specific users to run with specific parameters as admin. Something I can do with sudo (well, sudoers) in 5 minutes is outright impossible on Windows. I'd like to believe that Microsoft will implement this part of sudo, but I'm not gonna hold my breath
runas.exe cannot start elevated process. Exceptions seem to be MMC snap-ins so you can launch something like lusrmgr.msc or devmgmt.msc with admin account and you will have admin rights.