As you have likely discovered, the 8th Anniversary went live yesterday (Tuesday, April 14, 2015). The Anniversary gifts will be distributed sometime during the celebrations..sometime between now and April 24 (the real anniversary date). According to Vyvyanne, there was "an unforeseen conflict" that prevented a more timely release. The "conflict" is being dealt with. Below is the link to the anniversary gifts being distributed this year. Please note that this list was compiled 2-3 years ago and has been added to in each year since, so the date of membership for each year listed is from the original posting. The longer one plays LotRO, the more Anniversary gifts one becomes eligible for.
https://www.lotro.com/en/8anniversary