(31 May 2018, 11:05 pm)JM03 wrote Does anyone think a newer version of the 757 is currently essential for boeing right noe?

In my opinion there are a number of factors to consider.

1 - They need to compete against the A321LR. The 757 is perfect for this; but the current 757s are becoming old. The last one rolled off in 2004 - the technology and the engines are not the most efficient (but definitely some of the most powerful!). 
2 - Boeing have the 737 MAX10 as a competitor to the A321LR. This will somewhat replace the 757 long haul missions - but it is important to note that they say it is not a direct replacement of any of the 737 family. 

I think it would take a lot of effort and money to reopen the production line; as well as a lot of capital investment to update the design. It's easier to do when a model is already in production - such as the A32X Neo series. I think it will want to invest more capital into its 787 and 737 lines, as well as the proven 777 line - especially having just gained approval from the FAA for folding wingtips.

Obviously, this is just my opinion - but it would seem they have made their minds up on this one.