These are probably the two most prominent changes today, both taking effect on Easter.
This is great news for the Free Software world. Debian, being the most forked Linux distribution with the largest and most widely used package management tool apt, and Gaim (now Pidgin), being the most widely used IM client in the Free Software world with probably the most used library (libgaim, now libpurple) for other IM clients.
This preceding the news of Ubuntu Feisty being released in just 11 days. 🙂