Sorry I don't have any links. I was next door yesterday so I thought I'd stop in because this case is of interest to me for a few reasons. The hearing yesterday morning ended during the morning session and I didn't arrive until the afternoon session thinking they already had a jury in which case they don't go home early. There were no hearings being held by that time so I spoke to the clerk who was of course very nice and told me those details.
She said nothing until the 17th which is when jury selection begins. Btw the public are often not really welcome at jury selection. She also said that testimony would begin on the 24th.
The reason it says that the trial is already underway is because it was in fact set for trial on the master calendar. As a result the judge's only options are to have a trial, taken it off the calendar, or dismiss the case. The judge couldn't dismiss it or just take it off the calendar. So the trial (in this case a jury trial) begun because it was scheduled to do so. Its typical for the judge to still be assessing things like the readiness of the parties to proceed, the necessity to actually assemble a jury, scheduling/logistics and for good cause the judge was permitted to continue the trial that technically began on the 3rd or whenever it was scheduled to.