General Spoilers:
07/20 - Taking a cue from their own personal lives, as they often do, Carter [Bay] and Craig [Thomas] bought homes this past year, and some of that pain will spill over into the show: "One of the sort of general arcs of the season is Marshall and Lily dealing with their housing situation. We want to do the story of Marshall and Lily buying an apartment in New York and making every mistake you can possibly make. We're also going to deal with Marshall's career. He just graduated from law school. He wants to be an environmental lawyer. He's going to find out that when you have $100,000 in law school debt, that's maybe not the best financial decision." Source: Kristin on E!Online
07/19 - [Exec producer Craig] Thomas hints that this season we'll meet the woman that stole Barney's virginity. And she sounds frightening. There'll be lots of drama (and comedy) when Marshall and Lily purchase their first New York apartment. Marshall's work issues will also take center stage when he realizes that environmental law may not be the most lucrative career path. Wayne Brady will reprise his role as Barney's gay bro in a flashback episode that shows him "before he was gay... and very macho and over-compensating." Source: The Ausiello Report
07/19 - Executive producer Craig Thomas says we're going to meet Rhonda, the 45-year-old pal of Barney's mom, to whom Barney lost his virginity. "She smells like menthol cigarettes," previews Thomas. "We're going to see that story and what it does to Barney in the present day." Source: TV Squad
07/18 - There'll be more clues about the mother on HIMYM [this season]. Source: The Ausiello Report
06/23 - We hear the network is asking focus groups if they would prefer to see Ted and Robin dating or just being friends for next season. Source: Kristin on E!Online
Source: SpoilerFix.com