https://www.spotrac.com/nfl/dallas-cowboys/cap/
I think Jones and Browns contracts are up. They both look like valuable assets for at least 3 to 4 years. Chido is signed though 2020 so no worries there. I am not sure who Rhodes is. If you mean X Woods he is signed through 2020 as well. I love that Dallas has 4 good to great corners in Jones, Awuzi, Brown and Lewis.
I agree that they showed Marked improvement last season.
I think that several factors attributed to there success and improvement. .
1) The players improved on technique and conditioning. I tip my hat to their accomplishments to improve.
2) D-line pressure. It is easier to cover when the front 4 are doing there job.
3) LB play, The fact that QBs have to account for Smith and LVE really helps the back-end in coverage
4) Kris Richard
5) playing with a lead helps make opposing teams more one dimensional. Dak, Gallup, Cooper, Zeke and the Online did a great job of holding a lead and not turning over the ball.
This is a team sport and I think it is important to sign a player that has out performed his contract.
Jones and Brown need a piece of the pie as well.