We announced a new communications product, Hangouts, in May 2013. Hangouts will replace Google Talk and does not support XMPP.
As long as you adhere to the requirements of the XMPP specs, you should be able to connect to the Google Talk service. You need to know the following:- The service is hosted at talk.google.com on port 5222
- TLS is required
- The only supported authentication mechanism is SASL PLAIN