The GNOME Shell 3.15.2 release fixes some visual glitching, improves the layout of the extension installation dialog, supports the CSS margin property, and offers other bug fixes and minor enhancements. Most notable to GNOME Shell 3.15.2 though is there's finally Python 3 support.
Many GNOME components have long ported their Python 2 code to Python 3 while GNOME Shell's Python support has just received the Py3 treatment. Details on GNOME's overall Python 3 porting work can be found via this Wiki page.
GNOME 3.15.2 incorporates GTK+ Inspector improvements, more GTK+ OpenGL support (including GTK+ OpenGL support for the Mir back-end), support for Epiphany to open web page sources in the default text editor, improved thumbnail handling for the GNOME Desktop, updated themes, numerous improvements to GNOME Boxes, various enhancements to GNOME Maps, many bug fixes, and the usual assortment of translation updates.
GTK+ Inspector is a debugging tool that is built directly into GTK+ and is available in every GTK+ application by using of the shortcuts Ctrl-Shift-d or Ctrl-Shift-i.
Since I last wrote about it, a number of things have changed, so it is time to give an update on the state of GtkInspector as of GTK+ 3.15.2.
I must say, GNOME 3 has come up a long way from being really unintuitive desktop environment to a more intuitive and efficient one. I really like what I see in Ubuntu GNOME 14.10. It is aesthetically very refined, intuitive, supports multi-touch (with GNOME 3.14 upgrade) and is very efficient. Plus, the customization options are good and you don't need to be a techno wizard to make those changes.
Though the distro has a support period of 9 months, you can safely try it out. I bet you'll definitely enjoy it. Ubuntu GNOME 14.10 is definitely recommended from my side with the 2nd highest score I gave to any GNOME or GNOME forked (Cinnamon, Mate, Unity, etc.) distro that I reviewed during 2013-14.