I really don't think Pakistan Russia ties have improved. Russia wants money and Pakistan doesn't have plenty of it. India would forever be more attractive to Russia than Pakistan.Years ago I was told that WS-13E would be used on JF-17. Apparently it was more than just a way to pressure Russians into selling RD-93. I can not dismiss WS-13 just like that. In the last few years, however, Pakistan-Russia ties have improved just as India-US ties have grown stronger. So, in my view it is more likely that RD-93MA is being used; but WS-13E can not be discounted just yet.
Whatever improvements one might witness are very shallow. Russia, likely, uses it to insure India continue being its clientele. The RD-93 sale to Pakistan happened because of China ( both support and threat of replacement). India could have easily forced Russia to drop it.