There is no need for insider information. Qt4.6 clearly has a PR1.2 branch/comments, and it has been repeatedly announced for 2010 Q1. In practice this would mean late March, or, if you factor in QA, more likely April.
Sorry for the noob question, since I didn't know Eldar until now... Does he have inside information due to his status in the mobile community or is just assuming? Would you have a link to post here, pls?