I have heard that it'll be the same date as SP4 for windows XP....

Search is your friend here! or at least stop you losing friends here.....

On a serious note, PR1.4 from Nokia is very very unlikely. A community PR release will be when it is done and tested by members of this community.

Can I suggest that you channel some of your obvious eagerness in contacting and offering assistance with putting together a community update and testing of said update.

Many hands make light work and all that.......