This comes from the Cowboys mailbag Q&A at Dallascowboys.com:
I just wondered if you guys have seen any noticeable improvements in Dak's throwing accuracy this year at OTAs compared to the past? - JOSEPH CRUM / CORINTH, MS
Bryan: I have noticed a transformation of his body and overall mechanics. There were times when he missed, he missed badly. That hasn’t been the case in these OTAs. Ball has been on target and catchable. Credit to the hard work he’s put in on his own and with new quarterbacks coach Jon Kitna. Needs for this to carry over to camp.
Rob: It was only three open practices, but yes, that’s the best stretch of OTAs I’ve seen from Prescott in four years. He’s been accurate at all levels: short, intermediate and deep, like the dime he threw to Reggie Davis last week on a go-route for a touchdown.
Everyone can take this for whatever they feel it's worth, but there is mounting evidence and reports of the quarterback looking better than ever. That should be good news for any Cowboys fans.
https://www.dallascowboys.com/news/mailbag-dak-s-offseason-bigger-red-zone-add