The WWDC16 is approaching and with it rumours about the innovations that Apple could introduce soar. The latest rumor that has arisen directly points to a renewal of the Thunderbolt Display and relies on the lack of stock in some establishments.
On previous occasions the lack of stock of a product weeks before a company event, finished confirming your renewal, so in this case not would be unreasonable thinking that it could happen again. In addition, we must not forget that the current model is in the catalog of Apple from 2011 and have not received updates since then.

Screen 5K and graphics card integrated in the possible new Thunderbolt Display
Against this background it is logical that voices of renewal and would have all the sense of the world signed a new model launch.
Already have also released information on the possible characteristics of the new model. In particular they talk about a version with 5 K screen and integrated video (GPU) card in the screen itself. In terms of design not said nothing, although we think that if really the signature is released to renew the peripheral could have a similar to the current iMac ultra-thin design.

The integration of a GPU in the screen itself would serve as support to computers that connect to it. Move a screen with resolution 5K (5120 x 2880 pixels) requires a major graphical power, so the chip integrated in the display would make existing equipment compatible, besides of course the new models launching Apple market.
As we always say, by the time this are nothing more than rumors. We don’t have any official confirmation of this information, so we must treat this information as a rumor until Apple makes the so-called presentation.