Dev build 3063 is out now, with a few small improvements.
There is now an equivalent to the OSX command line tool on windows: subl.exe. While the basic functionality was previously available via just passing sublime_text.exe command line arguments, because it was a windowed application rather than a console one, it wasn’t possible to print help (i.e., subl.exe --help), nor was it possible to wait for file editing to finish (subl.exe --wait). Both are supported now.
Note that there is no equivalent command line tool on Linux, as it’s not required: the sublime_text binary already embeds the required functionality.