Question: Is it possible for TeamCity to integrate to JIRA like how Bamboo integrates to JIRA? I couldnt find any documentation on JetBrains website that talks about issue-tracker integration.

FYI: I heard that TeamCity is coming out with their own tracker called Charisma. Is that true?

Answer: 
TeamCity 5 EAP has support for showing issues from Jira on the tabs of your build. 

[EAP Release Notes](http://www.jetbrains.net/confluence/display/TW/Darjeeling+5.0+EAP+Release+Notes)

you still don't have the integration in Jira itself which I would prefer

[![alt text](https://i.stack.imgur.com/6JPQU.png)](https://i.stack.imgur.com/6JPQU.png)

[![alt text](https://i.stack.imgur.com/Wy171.jpg)](https://i.stack.imgur.com/Wy171.jpg)
TeamCity has 3 build in Issue Tracking Systems:

1.BugZilla
2.JIRA
3.YouTrack

And there's a way to install the custom plugin for other ITS.
I did an integration with FogBugz issue tracking system with TeamCity 9.x.
<https://github.com/jozefizso/teamcity-fogbugz>