THe BWV standard and boardwalk view 1BRs are typically open at 7 months out during the entire 8 1/2 month period that begins the Monday after marathon weekend in Jan and ends late Sep. That has been true for a long time.
As to the future, that could possibly change if Disney makes allowable changes, like (a) lowering points needed for 1BRs and raising them for studios while keeping total points appicable to the resort the same, (b) raising points needed for the Oct to December period that is in choice and adventure seasons, while lowering them for spring break weeks or summer months, (c) creating more new events that attract large numbers of
DVC reservations, e.g., 2016 was the first year for the Star Wars Dark Side weekend with a half marathon in mid-April; that weekend, after being announced in 2015, instantly became the second highest DVC demand time during that 8 1/2 month Jan to Sep period -- first was still the Princess half marathon weekend in February; however, even for those the BWV 1BRs (all views) were open at 7 months out.