Ethereum developers say Constantinople may be subject to delays following Saturday's test network release.
Ethereum core developers announced a delay in plans to launch Constantinople, ethereum's upcoming system-wide upgrade, on the test network.
Ethereum developers have confirmed an upcoming upgrade will activate on Ropsten around October 9.
A version of the ethereum blockchain being used by developers to test a forthcoming network upgrade is under an ongoing spam attack.
The testing of a forthcoming ethereum upgrade is now underway, with the process expected to last up to three weeks.