The new OBIEE 18.104.22.168.0 is released with lot of bug fixes and few new features and with mostly Zero training to interact on iPhone/iPad. Oracle also released OBI Apps 22.214.171.124 which is the first BI Apps for OBIEE 11g. These are available for download on Oracle Technology Network.
Below I have listed out few resources links.
OBIEE 126.96.36.199.0 and OBI Apps 188.8.131.52 download link:
OBIEE 184.108.40.206.0 documentation link:
OBI Apps 220.127.116.11 documentation link: