because of feedback from customer projects and via OSS tickets, I’d like to share the information that SAP is currently working on an update of the SAPUI5 maintenance strategy. The plan is still subject to be changed, but there is already a clear direction that it is important for you to plan the go live releases.
Basically the idea is that there will be dedicated UI5 versions that have a maintenance period from up to 2 years and thus are the recommended go-to releases for stable productive usage of the Fiori / UI5 applications. SAP will provide UI5 corrections via note or via SPs that contain only bug fixes which reduces the risk of regressions.
So why I’m writing a heads-up before the official roll-out:
The latest UI5 version 1.28 that is available via the NW UI add-on V1.0 SP12, HCP and soon via NW UI add-on V1.0 SP13 is already such a stable version. In case you have go-live date close by and are targeting a stable stack, please decide for SAPUI5 1.28 and directly avoid older releases that are no longer supported.
Usually, SP13 would have contained UI5 version 1.30 instead of a higher 1.28 patch level, so you already will see the difference in July. To avoid questions: there also will be a UI5 V1.30 with the latest innovations that is currently planned for 09/2015 (not yet a final date).
More information and also final confirmation yet to come (e.g. how long the stable period will be, what is the next stable version etc.), but please use already the additional opportunity that SAPUI5 is offering with 1.28.
So short version from this blog post: 1.28 for sure is a much better choice compared to 1.24 or 1.26 🙂