The Laika testnet will fork on Tue 24th, CET 11:59 AM. Currently, the testnet isn’t usable due to inactive validators. There’s also a shift in the logic of the need for a testnet.
In its current state, Laika does not represent a similar environment with the Trustlines Blockchain. This is due to there now only being 6 out of 23 validators still validating new blocks. This has led to a situation where there is no longer finality and, thus, a testnet where people could do some actual testing. Some have switched over to experimenting on the Trustlines Blockchain, but there’s still use for a testnet.
You can find the full post at Trustlines Blog.