Thanks. By the way - It was definitely 5 days earlier this year, at least through end of June if not later (I actually thought it was still 5 until I just checked). We bought our tickets in April of this year, when it was still 5, for flights in mid-December. Archive.org has a copy of the page in March which still has it at 5, and has a copy of when it down to 3 by September. (See https://web.archive.org/web/*/http://www.britishairways.com/en-us/information/seating/choosing-your-seat)

As far is it mattering, I saw some previous threads of people who had to call in as BA didn't give them family seating as expected. So was wondering when I should expect to see seats show up so I can call if issues.