I think this is what are you looking for.
I know that I can announce CDs via DBM raidtimers by writing a macro, but is there another addon that does this by default e.g. by raidwarnings?
i use optitaunt to announce when i use my major cd's like shield wall and junk and when they expire, works on my bear as well.
RSA - Raelli's spell alerter (or something like that)
Best one I have found with customizable message and choosing to put through to multiple channels at once (Raid/whisper/say, etc)
Revisiting this topic.
Both RSA and Wakespams are bugged out, and not being updated for a while now, no support for 4.3 on both. This last patch has now driven me to look for alternatives. I see Optitaunt's page here as beta updates for 4.3:
1) Anyone having trouble with Optitaunt? I am going to try it out.
2) Anyone have other alternatives they can recommend to announce Tank Cooldowns?
No DBM doesn't do a good job of announcing it like the above mentioned mods even with the Spell Timers addition.
It really is awesome to get a "ability link" in the announcement and an ability fading/expiration warning to help chain a Healer cooldown on tank when needed.
3) Any favorite Interrupt announcer to couple with Optitaunt you guys like?