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.
You can download the HotFixes from here.