Beta 1 is now available for testing, please help test it. New to testing? Head over to the wiki for all the information and background you need, along with contact points.
Also, there's a new Facebook group named LubuntuQA for testing new Lubuntu ISOs, as well as bug triage. You can find it here.
And at last, but not least, a new ISO made by Julien Lavergne with the LXQt desktop integrated, just for testing Lubuntu Next evolution, is available here.