I see jumping from PR4 to PR5 is a bit hard as compared to PR3 to PR4.Thanks for letting us know! I'm not noticing any changes on my sites, but I can see other sites have had their PR changed.
Yeah, I'm thinking about the same thing. Why PR haven't updated yet.Last PR update has been seen in Feb-2013 and if Google follow the same rule to update PR once in three month than May-2013 this is month of new update but still doesn't have any change seen in Google page rank update.