He's prepping for talks with some VCs in Dublin. He may not be able, legally speaking, to put out updates rights now. I know the SEC has some rules regarding this. There's an enforced "quiet" period where the company and its Principals are not allowed to share information.
Even if he's not legally constrained it may be that he's made a decision for "radio silence" prior to the VC meetings to simplify his interactions with them. It's much easier to give those folks accurate and timely information up front than to do re-education.
Otherwise he just may not have any information to share! If they're still on the timeline he posted back in August then there's really not much to say.