User blog comment:Woganhemlock/The Sims 3: Supernatural announced/@comment-4072597-20120613140856/@comment-1819613-20120614205241

TS1 had 7 EPs. TS2 had 8 EPs. Fans all over the place want Seasons and University. If SN is the last EP (which I doubt), EA would be losing tons of money due to the two most wanted themes, and since havoc ensues after we get the EP containing magic, EA is setting that featured which limited the ammount of celebrities, vampires and stuff like that.

However, TS2 had 10 SPs. Now - Diesel is the 7th SP and yet, it will be released before SN. If two more EPs are released and EA continues this trend of making two SPs between EPs instead of one, then we'd have 11 SPs released at the time the 9th EP is released (with one more EP and one more SP than the previous generation), closing TS3 in 2013 and possibly starting TS4 in 2014 (funny numbers, amirite?).