jquery mobile 1.4 is coming out and apparently have performance fixes making it better suited for cordova development.
Noets from Vineet:
"I wouldn't say 1.4 is more compatible. It's a case of jQM 1.4 being more suitable
for Cordova apps. jQM 1.4 is more performant and thus Cordova apps are less sluggish.
The release notes allude to this: http://jquerymobile.com/blog/2013/09/24/announcing-jquery-mobile-1-4-beta/
I've got no hard numbers here, but this slides in this talk - http://www.slideshare.net/AlexanderSchmitz/austin-26252266
gives a better overview of what's in 1.4. Slide 22 is most relevant -
jQM 1.4 ships with a better default theme that improves performance,
among various other changes discussed in other slides."
Need to find out what issues jquery mobile palette and others might have with supporting jquery mobile for both 1.3 and 1.4...will be relevant with future new versions too.