Well i did get finally the PR1.1 update today and here's a non-official changelog that has emerged on the net which is based it seems on a users noticed changes & fixes :

Upgrades and additions:

- Social 1.2 – photo and video upload improvements, though 1.3 is now available as a patch to this
- Ovi Store 2.0 preloaded – direct access, no launcher anymore
- New Ovi Maps data (#25) – bringing new navigable countries, though note that this is still v3.4.
- Quickoffice 6.4.166, with free editing licence on the N8, and improved zooming functions
- Adobe Reader updated to 2.5.653
- Web updated to 7.2.8.10, minor fixes
- Big update to Nokia Email; performance improved; ‘unread emails’ flag added to homescreen widget; meeting requests can be accepted directly from email invitations; maps integration, which means people can view the meeting location on the map when the address is mentioned in the location field in the invite
- Multiple general performance improvements
- Dialler now works in landscape mode
- Landscape qwerty layout altered to promote ‘@’ character
- New music player screensaver (shows track name and cycles colours)

Fixes:

- Charging indicator keeps going up when you disconnect charger under some circumstances
- Battery indicator algorithm tweaked to be more linear (i.e. the old ‘six bars and then it dies ten minutes later’ syndrome is hopefully banished)
- Problem with video streaming from web sites
- Smoother video camera zooming
- SMS message stuck in outbox
- MMS messages fail to send and get stuck in outbox
- Device does not restore all settings after retuning from power saving mode
- Screen image sometimes corrupted when you scroll up/down in Quickoffice
- Minor N8 charging issues
- Music player and Photos issues
- Set “save sent messages” as ‘No’, but actually they still get saved.
- Breathing light now optimised to ‘breathe’ only when screensaver is set to none or the phone is in powersaver mode
- Animated screensaver option removed
- Charging indicator erroneous when charging with power off
- Web browser crashes when encoding is set to “Thai (TIS-620)”
- Problem with National Geographic ‘web TV’
- Phone freezes when you insert the letter É inside a Social network
- All Widgets disappear after updating Social network and you set “Thai” UI

In addition to that don't forget that there were an applications update some weeks ago for videos (via the Software update application on your s^3) that enables you to add subtitles to your mobile videos (Currently supported file formats are SRT and SUB) and get a range of additional updates (codecs) to many other features and Social that includes improvements to the contact card such that Facebook status’ are shown on the default page, better indication of which contacts in the phonebook are linked to online services. The sharing service now allows for larger photos to be uploaded. Files up to 4Mb are now accepted in addition to the retweet option when using twitter.

Via : conversations.nokia.com & esphoneblog.com