Wizards has finally posted the PTQ announcement page for the current season. Click here to see it.
The announcements went up surprisingly late this time, with at least two PTQs having happened already in North America (in Ontario and Oregon). This coming weekend's crop includes Atlanta, Louisville, and Seattle -- and, of course, Grand Prix Los Angeles comes the following weekend, paralleling PTQs in Mobile and Omaha (and, of course, the Sunday PTQ at the GP itself).
Sadly, the dates for Northern California PTQs are not yet fixed, but we at least know that we will have two in the SF Bay Area (i.e. San Jose) and two in Sacramento. Dates we do know from our friendly neighborhood TO are the last two GP Trials in our area, on the 10th and the 11th (click here for the Matchplay site to see upcoming TO-led events, and click here for Superstars, where other Extended events are also being run).
I'm looking forward to this season, as I'm a big fan of the Extended format these days.