Hi just wondering what the actually difference between the old qtr sensors is apart from the number of leds? how does the arduino handle 8 analog outputs when it only has 6 inputs? also whats the difference between the analog and digital new qtr sensors?
This blog post by Jan talks about the new features of those QTR sensors and the differences between them. Strategies for using QTR sensors with more sensors than you might have pins might include not using all of the senors, using a QTRRC version so you can take advantage of the higher number of digital pins, or using some type of multiplexing.
The sensors on the board should be fine, but the pinouts of those two boards are very different, so you would need to figure out how you would mount the new board and wire it to the Zumo shield.