The phrase "current plateau" refers to a situation where something has reached a steady level or has stopped progressing for now. It means there is little or no change happening at the moment. Full definition
It was that tandem creativity of elevating the design tools and the game itself that allowed Epic to eventually excel and reach the current plateau with the Unreal Engine 4, which is one of the most comprehensive design tools on the market for big or small studios alike. (cinemablend.com)
The newest paper, in the current issue of Science, «Varying planetary heat sink led to global - warming slowdown and acceleration,» argues that the Atlantic not only has shaped the current plateau, but also was responsible for half of the sharp global warming at the end of the 20th century. (dotearth.blogs.nytimes.com)
That includes the current plateau in global temperature. (npr.org)