you can't get information about the next PR. but it happens each 3-4 months.so,probably it will be in february at the end of the month
Google has done its PR update on 31st DEC 2009. Check your sites and you will see changes. If you don't see any change doesn't mean that PR hasn't been updated but it means your pages remained same as they were before.
three of my sites went up.. i had a blog that was a pr0, i checked yesterday and it says pr3 now.. my pr2 blog went to pr3.. one of my pr3 blogs went to pr4.
pr is usually every 60-90 days but who knows with google lately. Some peoples blogs have been updating every couple of months. I'm hoping its febuary give them time to find some more of my backlinks. i hope to be a pr 3- or 4 if i'm lucky enough.