Raspbian update


i see in the docs that for the raspbian installation you provided an updated image some days ago emlid-raspbian-20160718.img

However, I am using raspbian image emlid-raspbian-20160408.img
What are the benefits using the new image ?? Should I install from scratch the new image ? Can I actually update the old image to the new one using sudo apt-get update && sudo apt-get upgrade or this command is not enough ??

Thank you

You look at the changelogs to figure out!
The upgrade command won’t install the driver for rtl8812 Wi-Fi dongles, but other than that there’s no reason not to upgrade. Moreover, we encourage you to.