I'm not sure if NYT is actively updating their forecast, but 229 seats for the Democrats seems way too conservative at this point. They currently have 225 secured, and NJ-03, CA-25, UT-04, NY-22, and CA-48 are quite likely to flip (NYT has all of the Democrats leading but none declared the victors). That's already 230, and that's not to mention the strong possibility that some combination of CA-10, CA-39, CA-45, and/or even GA-07 or TX-27 flip.
They stopped updating their forecast at 2 p.m. yesterday.