As it sits right now, CM9 is in stable format for 45 devices. Covering Samsung, Sony, LG, ASUS, HTC and Motorola. Check the list below for each device.
Samsung:
- Google Galaxy Nexus International (maguro)
- Google Galaxy Nexus Verizon (toro)
- Google Galaxy Nexus Sprint (toroplus)
- Google Nexus S International (crespo)
- Google Nexus S 4G (crespo4g)
- Galaxy S3 I9300 International (i9300)
- Galaxy S I9000 (galaxysmtd)
- Galaxy S I9000 B (galaxysmtdb)
- Epic 4G Sprint (epicmtd)
- Captivate AT&T (captivatemtd)
- Galaxy S II I9100 (galaxys2)
- Galaxy S II G (i9100g)
- Galaxy S II AT&T (i777)
- Galaxy S II AT&T LTE (skyrocket)
- Galaxy S II T-Mobile (hercules)
- Galaxy Note International (n7000)
- Galaxy Note AT&T (quincyatt)
- Galaxy Tab (p1)
- Galaxy Tab CDMA (p1c)
- Galaxy Tab (p1n)
- Galaxy Tab (p1l)
- Galaxy Tab 2 7.0 Wi-Fi 8GB (p3110)
- Galaxy Tab 2 7.0 Wi-Fi 8GB (p3113)
- Galaxy Tab 2 10.1 Wi-Fi 16GB (p5110)
- Galaxy Tab 2 10.1 Wi-Fi 16GB (p5113)
- Galaxy Tab 2 10.1 3G 16GB (p5100)
Sony Ericsson:
- Xperia S (nozomi)
- Xperia Play R800i (zeus)
- Xperia Play CDMA R800x (zeusc)
- Xperia Ray ST18i (urushi)
- Xperia Arc LT15i (anzu)
- Xperia Neo MT15i (hallon)
- Xperia Neo V MT11i (haida)
- Xperia Active ST17i (satsuma)
- Xperia Mini ST15i (smultron)
- Xperia Mini Pro SK17i (mango)
- Live with Walkman WT19i (coconut)
LG:
- Optimus LTE / Nitro HD (p930)
- Optimus LTE SKT (su640)
- Optimus Sol (e730)
ASUS:
- EeePad Transformer Pad (tf300t)
- EeePad Transformer Prime (tf201)
- EeePad Transformer (tf101)
HTC:
- Sensation (pyramid)
Motorola:
- Xoom Wi-Fi (wingray)
This marks a great achievement for the CM team. The stable build release is generally the last build made for a particular run. Now we are sure there might be a few tweaks and changes here and there, but for the most part CM9 is your go to ICS ROM for customization, speed and life for your device.  Now they comfortably move on to producing CM10 and bringing the Jelly Bean love to a stable point.
When will that be? Don’t ask. All anyone needs to know is that it is being worked on and it will come when it gets here. Best thing to do is follow their G+ page, Twitter account, Official Blog and the get.cm page for constant updates. If you missed the stable build release and are still sporting a nightly, now is just as good of a time as any to get your device updates, assuming it was listed of course. Head over to get.cm and track down your device and get it downloaded.
Source: Cyanogen Blog via XDA