Season 6 aired beginning September 23, 2007.
The DVD was released on October 21, 2008.
Your question is moot, there's no possible way there will be 28 seasons of Family Guy.
I Checked HMV Canada,s Web Site, & They List The Release Date Of The Family Guy Season 7 DVD As June 16, 2009.
By release date are you referring to the air date? If so it's September 27th 2009. If you mean DVD release date, technically Season Seven will never be released because FOX doesn't release complete season sets (with the exception of Season 3). Volume 7 was released June 16th 2009. Volume 8 which will contain the remaining Season 7 episodes and most likely the first 6 (or 7) episodes of Season 8. Its release date is unknown.
Check the store know. It's bound to be there now since Family Guy is long past Season 7.
November 10th, 2008
September 29, 2009 although it should be noted the episode are not part of Family Guy's aired Season Eight as they aired in America on FOX. The set contains the remaining four episodes of Season 6 and the first nine episodes of Season 7 as they originally aired on FOX.
December 9, 2014
Meet the Quagmires is episode 18 of season 5 of Family Guy.
The sixth season.
A Very Special Family Guy Freakin' Christmas was in Season Three.Road to the North Pole was in Season Nine.
Season Seven
season 7