The phrase "new preview" refers to getting a sneak peek or an early look at something that has recently been created or is about to be released. Full definition
The developers didn't take a lot of time until they decided to unveil the character through a brand new preview video. (playstationenthusiast.com)
Check a look at new preview after the jump. (crunchyroll.com)
Almost every week, Microsoft releases new preview builds of Windows 10 with new features, bug fixes and improvements, based on the feedback of its growing community of testers and enthusiasts. (windowscentral.com)