You've been invited into the Kudos (beta program) private group. Chat with others in the program, or give feedback to Atlassian.
Previously the limits were 50GB for Confluence and 100GB for JIRA. or 100GB if both were linked. As of Jan 11, 2019 they have increased the limits to 250GB per product. Atlassian Storage Limits.
Thought some of you might find this interesting.