For what it's worth, some developers consider it rude to ask if there is progress when anyone can see at any time whether or not there is progress by browsing the public source code repository and viewing the commit history. The MAME team is not in the business of operating under secrecy.
It appears that that commit was made 18 days ago, which was after the release of 0.180. Therefore, if you download 0.180, it won't have the updates that were made after it was released.
If you would like to try the latest version of the driver and see what changes have been made, you can either wait for 0.181 to be released in 3 days, or you can follow the instructions here to compile your own development version based on what is currently checked into Github: http://www.mamedev.org/tools/
It's pretty straightforward to build if you don't want to wait, but as I mentioned, the next version will be out in 3 days anyway.