yes, it's in a file called "changelog"
you can find it at /usr/share/doc/xbmc/changelog.Debian.gz after upgrading.
the ppa package builder adds it's own lines on top so you don't see it in launchpad directly.
Code:
* Cache channel icons locally if an icon dir is set in guisettings.
* Fixed slow or non-responsive UI when updates are running.
* Fixed persisting channel settings.
* Refactored and fixed EPG, channel, channel group, timer and recordings updates.
* Fixed now and next recordings info in the UI.
* Fixed stream info updates in the UI.
* Refreshing timer and recording lists when needed now.
* Fixed genres on EPG tags.
* Updated English translation.
* New option: sync channel groups with backends. One way only at the moment (add-on -> XBMC) and only implemented in tvheadend. Channel groups cannot be sorted yet.
* Greatly improved XBMC's startup time. The first start after updating to this version may be a bit slow because of icons will be cached and groups will be imported if you're using tvheadend.
* PVR add-on interface cleaned up. Using UTC times now that are converted to local time by XBMC. Fixes PVR timezone conversion issues.
* Various minor bugfixes and optimisations.
* Fixes from mainline XBMC.