The OG Galaxy Tab may be dead to Samsung, but, as always, you can count on the community to keep older devices alive. Official CM 10 nightlies for the original Galaxy Tab (p1000, p1000l, and p1000n) just hit the CyanogenMod download site, so owners of those devices can finally get a taste of Jelly Bean in its purest form.
[nightlies]
Those aren't the only new additions to the CM10 family either - the CM team also released nightlies for the AT&T variant of the Galaxy Note.
All variants are available now for your flashing pleasure - hit the respective link below to grab the appropriate one.