This release introduces support for new platforms:  HP Nonstop X86 and Linux on Power8 (little-endian).

This release also improves the scalability of Ultra Messaging Persistence by replacing store-driven keepalives with receiver-driven proactive keepalives.  This behavior is fully backwards compatible (6.9.1 stores will interact with pre-6.9.1 receivers as before, and 6.9.1 receivers will interact with pre-6.9.1 stores as before).  A new receiver configuration option “ume_proactive_keepalive_interval” has been added, which can be modified for new-receiver-old-store interoperability in cases where the old store has a non-default “keepalive-interval” setting.

Informatica Ultra Messaging Queuing Edition 6.9.1 Release Notes

Informatica Ultra Messaging Router 6.9.1 Release Notes 

Informatica Ultra Messaging Persistence Edition 6.9.1 Release Notes

Informatica Ultra Messaging Streaming Edition 6.9.1 Release Notes

PAM for Ultra Messaging 6.9 HotFix 1

You can download the HotFixes from here.