The party line on our Niagara technology continues to be “sometime late this year or early next year”. I’ve written lots on the concurrency issues that arrive along with Niagara (and every other chip designer is heading down the same multithreaded path); if you want more, check out CMT is coming: Is your application ready? by Richard McDougall, with tons of pointers to big, serious pieces on the subject, including one by Kunle Olokotun, the man behind Niagara.