Although I've not personally used Adobe Reader on my BlackBerry Z10 all that much, it does seem to be a popular app among users. An update rolling out now pushes the app into v10.1.0.4 and has some pretty decent changes included with it. If you find yourself using the app often, you'll want to make sure you go ahead and grab the update. Need to know exactly what's changed? No problem, BlackBerry did list them all for us:
The update is live right now, you can update from within BlackBerry World or hit the link below to be taken right to the app download.