It's too late to do anything for the next PR update anyway. Links and pages for the last update were taken at 29th of July, so they'll probably use the status of end of October for the next update. Everything you do now will be PR-visislbe in about half a year...
No PR update for this year... but let's don't forgot that google usualy did some big algo updates right before x-max and easter day ... why ? maiby to turn site owners mad, and put them to use ad-words to sell theyre gifts...
New years day 5.15 PM - Just kidding I don't know really but it will be around that time fingers crossed!