The Product Lifecycle Policy, which applies to the product as a whole, is illustrated in the diagram below.

Support Product Lifecycle Diagram

Note that support for certain versions of SolOS firmware and certain versions of PubSub+ software products follow different timelines as described in Solace Support Services. For a list of these versions and their support dates, see Support Dates for Release Versions.

Milestones and Phases

Descriptions of each stage in Solace’s Product Lifecycle are presented in the following table.

Milestone / PhaseDescription
Product IntroductionMarks the beginning of the General Availability phase. At this point customers may begin to purchase the product.
General AvailabilityDuring this phase customers may purchase the product without restriction. Customers with current support plans will receive Major, Maintenance and Hotfix releases applicable to the product.
The General Availability phase typically lasts 3 to 4 years.
End of SalesMarks the end of the General Availability phase, and the beginning of the No New Sales Phase.
No New SalesDuring this phase the product is not generally available for purchase. Customers with current support plans will receive the same level of support as during the General Availability Phase.
The No New Sales phase is 5 years long.
End of SupportAfter 5 years of No New Sales, customers will no longer have the option of renewing their support plans, and Solace will cease providing support for the product.

Deprecated Features

This section lists the deprecated features in the Solace PubSub+ Event Broker Platform.

NameDescriptionRecommended Alternative(s)Final VersionRemoval Date
Cut-Through Persistence (CTP)CTP, also known as Cut-through Messaging, enables the delivery of guaranteed messages with very low latency from Solace PubSub+ to consumers with relatively low message rates and a small number of clients, but it limits the use of many of the newer features of PubSub+ event brokers. Please type “show message-spool stats” and check that messages delivered cut-through = 0 to verify your organization does not use CTP.Guaranteed messagingApril, 2022May 31, 2022

Customer Communication

Note: Formal notifications of a product reaching any product lifecycle milestone will be sent by email to customers on active Support Plans. Contact Solace Support at to be included in these notifications.