Well, it's been recanted by the blogger he was quoting:
The blogger has corrected her information; the person she saw in the trailer was YUZU, she said, not Orihime. She saw the Naruto movie again and subsequently saw the Bleach Movie 4 trailer again and noticed this time that who she thought was Orihime was indeed Yuzu. I find this curious, but apparently some seasoned Bleach fans elsewhere in Western fandom were also mistaking Yuzu for Orihime in the Movie 4 ad.
For the record, I find it highly unlikely that Orihime is NOT going to appear in this Bleach movie but here's a great example of what happens when a little bit of unverified info takes off running and gets established as fact. I'm sure we'll see the full trailer eventually on the movie website. Patience is a virtue, people.