No. Whilst it came bundled with your Mac it was not part of the OS but of iLife.
The current version of iLife 11 available from Apple does not include iDVD (or iWeb), but you can buy iLife 9 or 11 from Amazon and that does include iDVD 7.
It is worth noting that the version of iDVD 7 included with iLife 11 only includes themes from iDVD 5-7. If you want all the older themes you should buy iLife 9, which has the same version of iDVD 7 but with all the themes.
But even though you can still buy iLife 11 that includes iDVD 7 from Amazon, Apple now make it difficult to install:
Poster jhb21939 posted this in another thread:
“when I attempted to load iDVD into a new iMac. A notice came up on the screen stating that the 'Authorisation Licence' had expired on 25 March this year (2012).
I contacted the Apple support team and eventually, I was told that the Licence had been withdrawn and could no longer be used.”
In other words Apple are now so adamant that we don’t use iDVD that they have tried to make it impossible to install.
In response, Old Toad posted this solution:
“You can still use it one all of your Macs. If you get an invalid certificate message just set your Mac's clock to sometime before early 2011 and run the installer. After you're done reset the time back to the correct time.” He added this comment:
“It began after iDVD and iWeb were discontued and they were dropped from the Apple Store. All I can think of is the certificate was set to expire after a certain time period after the intitial iLife disc was released.