The Source article also features two in-progress images, and quotes Francis Manapul:
The entire creative team is looking forward to introducing new ways of portraying speed. It’s also cool that we’ll be introducing a new generation to Barry Allen as well as myself so I’ll be right in they’re shoes of getting to know this guy. It should be an exciting ride!
The Hero Complex interview doesn’t reveal anything new about the upcoming series, but Geoff Johns does talk about his history with the Flash and thoughts about his approach to the character. Some quotes that stood out to me:
We all have a “thicket of mythology.” You meet someone and they have an entire backstory. A city they were born in. A best friend they lost touch with. An event that affected their whole family. A first job. Everyone has history. And every character has history.
The most frustrating thing for Barry is related to his job as a member of Central City CSI. He investigates crimes that have already happened. Murders he can’t stop. No matter how fast he is, that’s the past.
I look at something like “The Flash” as a long term mission. “The Flash: Rebirth” was the knot to untangle in the shoelace before we could run. I wanted to clear the board, re-examine some key elements of Barry Allen and re-introduce a threat that would play throughout the next several years.
I’d offer more commentary, but I’m kind of swamped at the moment.
Update: Forgot to mention: The first hints of the new Secret Files book had Tony Harris working on the cover. Or, rather, “a” cover. He even posted a snippet of art. Maybe one of them is a variant cover, or maybe DC decided not to use his, or maybe it’ll be an interior splash page.