This event has been happening since 2008, so there’s a good chance you’ve experienced a few of these if you’re a LOTRO player. Still, these seasonal festivals do endure for a reason, and the charm of spring is fun for many. You’ll be able to grab the repeatable quest “A Taste of Spring” and start participating in a number of spring activities to mark them off and get your rewards.
There are all kinds of events at the Bree-land Festival Grounds, Duillond in Ered Luin, Thorin’s Hall in northwestern Ered Luin, and Brackenborings in The Shire. You'll be able to get a map to the Bree-land Festival Grounds when you log in and head over there to start your spring celebrations.
Spring events each year include dancing, gathering flowers, horse races, Stomp a Shrew, and other ways of marking the season. Of course, there’s also the Inn League vs the Ale Association if that’s more your speed. The more events you participate in, the more will get notched in your quest log for A Taste of Spring, until you’ve gotten to 10/10.
Aside form the festival, in this update are a barter vendor called Overseer - Hiddenhoard Raid Reward Vendor that’s now at Zidir-nesad, The Steepset in Máttugard who’ll be able to exchange a piece of Hiddenhoard armor for a different piece tuned for another specialization. Also, bartering for Dwarf-iron Fragment crafting components is available with the Kindred Grey Mountains Expedition.
For the full update details, see the announcement and update notes for 32.0.4 at The Lord of the Rings Online.