Well, this is entirely dependent on if the Devs find something is off during the set up Lam preview 2. We've had instances before where when there's one more preview, it gets canned when something is discovered and there's not enough time to compile a new one and deploy for preview before the update anyway.
So fingers crossed, if no such issues are found, then Lam preview 2 will be up later today.
If it's a technical issue stopping it, then it could get delayed until tomorrow or later on today.
J1NG