Here is a list of all the components that are released by the Telepathy project upstream, with links to their latest tarballs. For other 3rd-party components, you will need to check their websites instead.
You can also browse the releases directory here
|Component||Type||Latest stable||Latest unstable||Latest 'next'|
|Telepathy D-Bus API Specification||Document||0.27.4||0.99.8|
|Telepathy Gabble||Connection Manager||0.18.4||0.17.5||0.99.10|
|Telepathy Salut||Connection Manager||0.8.1||0.7.2||0.99.11|
|Telepathy Haze||Connection Manager||0.8.2||0.7.1||0.99.11|
|Telepathy Rakia||Connection Manager||0.8.0||0.7.5||0.99.11|
|Telepathy Idle||Connection Manager||0.2.2||0.1.17||0.99.11|
|Telepathy Morse||Connection Manager|
|Telepathy Nonsense||Connection Manager|
|Telepathy Hanging||Connection Manager|
About the ‘next’ releases
Telepathy ‘next’ is the next major version of the Telepathy Spec that will break API, leading to the need for API/ABI changes also in the libraries, which affect all the components. Currently this is in alpha stage, so do not use these versions unless you know what you are doing.