There aren't very many details available about the Tolino Vision, but I do know that it is described as "the new, ultra-flat tolino e-reader". It's said to be lighter, faster, and have "space for up to 2,000 e-books". According to the listing, this device was designed by a team at Deutsche Telekom, one of the members of the Tolino consortium.
In spite of what some might tell you, there actually aren't any specs available; just a marketing blurb. But if I had to guess I would bet that this ebook reader has a Carta E-ink screen and a faster CPU. It's also reasonable to assume it will have a frontlight, touchscreen, and Wifi.
So how do I know it's real?
I don't have confirmation but I can tell you that shortly after Deutsche Telekom was queried, the listing on the design website was taken down (less than an hour later). The page had theoretically been posted by their design group, and they probably took it down at the orders of management. Luckily the page is still available in the Google Cache, so I have a link to show you and prove that it did exist.
That is thin evidence, I know, but if this weren't an official design then DT could simply have denied their involvement. Removal suggests that someone in the design group really did upload the image and write the description, otherwise they would not have been able to take it down so quickly.
Johannes Haupt of Lesen.net is expecting that the Tolino Vision could be launched as early as next week. A major book fair is going to be held in Leipzig, and I too think that would be a good opportunity to unveil the Tolino Vision.