No, you won't receive the disc for future backup unless you buy it. I've checked their website's Pricing page and it appears that you have to pay 15 $ more in order for them to email the CD with the software on it.
Also, you can't buy only the CD. As they say, it's necessary to have a current subscription/purchase the app to be eligible for CD acquisition.
"CDs Mailed to You (requires current purchase of software or current support subscription in effect)" - from their website.