The 1.3.0 RC was expected to be marked stable on Wednesday 15th of July. However we will need to delay the release by one day to Thursday 16th of July. During RC testing, a regression was discovered that caused the ledger offset in transaction stream requests to not be observed properly in some corner cases. See #6698 for more details. We are presently in the process of backporting this fix to the SDK 1.3 RC and running it through our testing processes.