Best bet is, when you see a few Bell trucks in the area (1-3 weeks) sometimes they've got tents covering their work, at that point, it's sooner than later.
Unfortunately, even if you're told 6 months, there's no guarantee that it will actually reach you by then.
The 6 month window is generally given when they're updating the local area to handle 25/10 and 50/10, as a general rule, FibeTV will come after that. Not always though.
What's the max connection that Bell says you can get now?