I've woken up this morning with the announcement of the Caliper 1.1 update for Learn Telemetry Service on January 3, 2019. This is an incompatible version that will make the 3 custom Event Stores I've just finished developing to stop working.
Usually deprecations are announced a year before the change, but this is just a month, and yes, this is a deprecation, not an upgrade, because it's not backward compatible. All the Caliper Event Stores configured with Learn 9.1 Q2 2017 (3200.0.0),Learn 9.1 Q4 2017 (3300.0.0),Learn 9.1 Q2 2018 (3400.0.0),Learn 9.1 Q4 2018 (3500.0.0),SaaS will stop working because the model of the events has changed.
This joke will cost me and my team a big deal in credibility with our customers, delay in their projects and a buch of free work hours. Not sure what Blackboard is thinking about making this changes within a month and with the Christmas holidays in a few days.