Last night during the midseason premiere of The Flash, Barry Allen/The Flash (Grant Gustin) was convicted of murdering Clifford Devoe/The Thinker (Neil Sandilands). While Barry is innocent of the crime and outing himself as The Flash very well might have seen him acquitted, Barry opted not to say anything, but Iris (Candice Patton) almost did and discovered her husband has a brand-new power in the process.
When Iris burst into the court room to reveal her husband's secret, heroic identity, Barry leapt up to stop her. No, he didn't super speed her out of the courtroom. He simply placed his hand on her shoulders and, for both of them, the world seemed to stop except for the conversation they were having. It was something that completely surprised Iris, with her even asking how this was happening. Barry said he didn't know; this was a completely new ability allowing him to move Iris with him as fast as he did, so fast that no one could hear them or see them speaking.
By holding Iris, Barry was able to extend his speedster abilities to her, at least in terms of moving them both. This is completely different than Barry simply picking someone up and carrying them at his speed. Iris, for that moment, was connected to the Speed Force with him.
