OK, so here's what we know for sure (i.e. confirmed by a dev or the community team):
- There will be an announcement soon, potentially at E3 (June 15-17) http://forums.lotro.com/showpost.php...&postcount=226
- Turbine will be presenting at E3 under the Warner Brothers banner http://forums.lotro.com/showpost.php...9&postcount=27
- We will get new icons for something at some point. http://forums.lotro.com/showpost.php...&postcount=234
- Fear debuffs will no longer invisibly stack in the next update. http://forums.lotro.com/showpost.php...0&postcount=20, http://forums.lotro.com/showpost.php...5&postcount=24
- Threat squigglies will be universally shown in the next update. http://forums.lotro.com/showpost.php...3&postcount=16
- LM & Burg debuffs will be fixed in the next update http://forums.lotro.com/showpost.php...6&postcount=14
- The Stunned/Dazed icon will show when "show only dispellable effects" is enabled http://forums.lotro.com/showpost.php...1&postcount=55
- Something called Enedwaith will be added to the game before the end of the year http://www.youtube.com/watch?v=4uQL8uUl6-w
- We are moving toward Isengard http://www.youtube.com/watch?v=4uQL8uUl6-w
- DX11 is anticipated in the "next major game update" & is live on Turbine's internal test platform http://forums.lotro.com/showpost.php...3&postcount=22, http://forums.lotro.com/showpost.php...&postcount=278
- Warg-riders will no longer use their Hamstring/Ride-by-Attack skill until they have been actually attacked. http://forums.lotro.com/showpost.php...4&postcount=12
- Male hobbit run animation will be updated (again) http://forums.lotro.com/showpost.php...7&postcount=78
- Free swift-travel from the Ettenmoors on promotional week(end)s will be fixed in the next update http://forums.lotro.com/showpost.php...3&postcount=23
- Free-to-Play business model w/ micro-transactions coming this fall http://forums.lotro.com/showthread.php?t=335117
- New "wardrobe system" for cosmetic items http://forums.lotro.com/showpost.php...0&postcount=74
Please post any additional tidbits you are aware of along with a link to the official confirmation from a Turbine employee, I will try to keep this list updated as we get more info leading up to the next content update(s). Any information provided without a link to an official Turbine statement will be ignored -- this is not a place for speculation, this is to track what we know for sure.
**Thanks to gildhur, scrappythegreat, & robnkarla for providing info & links.