Version v8 to v9 Upgrade

8.0 or 8.2 or 8.4?

From 8.5.2 to 9.2. 

Heard that we will see new version soon. Any info on this is also helpful. 

From my company's case, they processed from v8.4+ to v9.0 in almost one day.
From v9.0 to v9.2 is smooth - within the scheduled hour.

When upgrading from 8.5 to 9.2, where there any 'remediation' or 'testing' phases needing completed like they recommended when going from V7 to V8?

If you are moving to v9.2 you need to be aware that WinSCP use is fully deprecated i.e. the WinSCP assembly is no longer shipped as part of this version. Therefore if you have any SFTP functionality in your Business Rules that uses WinSCP then it will need to be replaced with code leveraging the Renci SSH.Net assembly which is now the only supported assembly for SFTP from v9.2 onwards. Also Cloud Administration Tool (CAT) is the chosen method for managing Client Secrets so if you have any calls to the DecryptText and EncryptText methods (to secure credentials stored in a parameter or custom table) they will need to be replaced as they are fully deprecated and will no longer work.

In addition to the WinSCP change, one other item to note is the new application security role setting for "AnalyticsAPI."  This controls who will have access to OneStream data when using an external connector (e.g. PowerBI connector).  This is a great enhancement to security that way you can control exactly who is pulling OneStream data externally.