The governor, Northam, is an avowed (almost maniacal) antigunner, and has made an AWB a top priority. The House of Delegates is split, 51-49 in favor of the Republicans, but with several races going to recounts and coin tosses. (In the previous legislature, the Republicans had a 32-seat advantage, so you see where this trend is going.) Likewise, the Senate is split 21-19 in favor of the Republicans, with the next election in 2019. A flip of one seat would give control to the Democrats, since the Lt. Gov. has the deciding vote. As far as I know, all the Democrats are in favor of an AWB, since the party has made that a litmus test (much to my chagrin, I might add). I would say the odds are that we'll see an AWB in early 2020. It would be almost a miracle if that can be avoided.
The key question will be, what form would an AWB take? Grandfathering, or not? Remember, Virginia is one of several "Uniform Machine Gun Act" states. It would be a simple thing to bring AW's under the relatively toothless UMGA (registration with the State Police is required, and that's about it). The proposed 10-round magazine limit is actually more troublesome.