Close button sends client to the tray, statically linked Qt for OSX.
See the Changelog for list of features and fixes currently only available in the nightly builds.
With today's release I get to check off one of the longest and most oft-requested changes to SoulseekQt: the ability to display search results the way they're displayed in the original client, without the breakdown into a tree of usernames and folders. Some of you just preferred the old look, more of you were missing the ability to sort search results by any of the columns. I prefer the new look, and most of the things that can be done through column sorting can be done with filters as well, but now you have the choice. To display your search results the old way, check Options->General->Use old-style search results. The change will apply to any yet-unopened search result tabs. Everything seems to be working, including filters for the most part (the minimum files in folder filter is not functional for the old style as of yet), but I haven't done very extensive testing of this rather sizable modification, so let me know if you run into any problems and I'll fix them ASAP.
The other notable change is in regard to donations. In addition to the usual benefits, we've added two small, but permanent perks that come with any one-time donation of $5 or more. First, your username will never expire. We usually clear usernames that haven't been logged into for more than 30 days to conserve on server memory. That won't affect the username under which you've made the donation. The other permanent perk is a gold star Soulseek Supporter badge that replaces the 'Support Soulseek!' text on the donation button. You'll still see the number of days of privileges you have left next to your badge, and you can still use the button to donate again, but the badge will remain there for as long as you're logged in to the same username. These perks are already active for anyone with any privileges time left.
The following has changed between the 11/7 and 11/16 builds:
Links are on the download page.