Has the solo pool been updated to support version-rolling AsicBoost and the Halong Dragonmint T-1?
Well its run by the developer of the firmware for the miner, so yes.

I know ckpool.org is, but couldn't find a definitive answer for the solo pool. Assumed it was, but wanted to confirm before I threw any power over to it.

Yes of course it is. I announced it here ages ago, but news gets drowned out.